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RKKY-Dipolar Interactions and 3D Spin Supersolid on Stacked Triangular Lattice 认领 引用
1
作者 Ning Xi Xitong Xu +9 位作者 Guoliang Wu Mingfang Shu Hao Chen Yuan Gao Zhentao Wang Gang Su Jie Ma Zhe Qu Xi Chen Wei Li 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第5期305-313,共9页
Inspired by the recent discovery of metallic spin supersolidity and its giant magnetocaloric effect in the rareearth alloy EuCo2Al9,we perform a combined study through electronic structure analysis,effective spi... Inspired by the recent discovery of metallic spin supersolidity and its giant magnetocaloric effect in the rareearth alloy EuCo2Al9,we perform a combined study through electronic structure analysis,effective spin model construction,and Monte Carlo simulations on a stacked triangular lattice(STL),and reveal a novel mechanism for the emergence of 3D spin supersolid in a metallic antiferromagnet.From first-principles inputs,we derive a minimal spin model on a STL,which arises from the interplay between Ruderman-Kittel-Kasuya-Yosida and dipolar interactions and accurately reproduces the experimental thermodynamics.Based on the STL model,we identify a ground state that simultaneously breaks discrete lattice translational symmetry and continuous spinrotational symmetry--the hallmark of a spin supersolid.Furthermore,we present the field-temperature phase diagram of the 3D STL model and discuss the various magnetic phases and associated phase transitions.Under zero field,the spin supersolid Y order establishes in two steps:an upper transition at TN1,where an emergent U(1)symmetry appears and the system enters a fluctuating collinear regime,followed by a lower transition at TN2into the spin supersolid Y phase.In contrast,the supersolid V phase undergoes a single phase transition at T.Our results not only provide a comprehensive theoretical understanding of the metallic spin supersolid reported for EuCo2Al9but also pave the way for further experimental investigations into its supersolid transitions and universality class. 展开更多
关键词 monte carlo simulations giant magnetocaloric effect electronic structure analysiseffective spin model constructionand d spin supersolid rareearth alloy metallic spin supersolidity minimal spin model stacked triangular lattice stl
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Electric-Field Control of Spin and Orbital Hall Effects in a Nodal-Ring Heterostructure Independent of Spin-Orbit Coupling 认领 引用
2
作者 Zhikuan Wang Wei Tan +2 位作者 Jianfeng Wang Zeyu Jiang Bing Huang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第4期216-230,共15页
The spin Hall effect(SHE)and the emerging orbital Hall effect(OHE)offer promising pathways for energyefficient spintronic and orbitronic devices.However,achieving direct,continuous,and efficient electric-field control... The spin Hall effect(SHE)and the emerging orbital Hall effect(OHE)offer promising pathways for energyefficient spintronic and orbitronic devices.However,achieving direct,continuous,and efficient electric-field control of spin and orbital Hall conductivities remains a significant challenge,as conventional approaches relying on modulation of Rashba spin–orbit coupling(SOC)face inherent limitations. 展开更多
关键词 nodal ring heterostructure orbital hall effect ohe offer orbital Hall effect spin orbital hall conductivities energyefficient spintronic orbitronic deviceshoweverachieving electric field control spin Hall effect spin hall effect she
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Thermal Responses of Spin Density and Spin Current Induced by Bogoliubov Fermi Surfaces in Proximity Superconductors 认领 引用
3
作者 Yingwen Zhang Cong Xiao Xiao Li 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第6期92-96,共5页
The emergence of Bogoliubov Fermi surfaces in s-wave proximity superconducting systems provides a unique platform for generating nontrivial spin responses in the presence of spin-orbit coupling.In this work,we investi... The emergence of Bogoliubov Fermi surfaces in s-wave proximity superconducting systems provides a unique platform for generating nontrivial spin responses in the presence of spin-orbit coupling.In this work,we investigate temperature-gradient driven responses of spin polarization and spin current in such a proximity system related to Fe(Te,Se).The interplay of in-plane magnetization,superconductivity,and nematicity gives rise to nontrivial Berry curvature and spin-related hybrid Berry curvature on the Bogoliubov Fermi surfaces,which are shown to lead to finite thermally driven nonequilibrium spin polarization and spin Nernst effect.We find that the responses are strongly enhanced by the emergence of Bogoliubov Fermi surfaces,and are linear in temperature at low temperatures,rendering a unique spintronic character of Bogoliubov Fermi surfaces. 展开更多
关键词 generating nontrivial spin responses nontrivial berry curvature thermal responses spin current bogoliubov fermi surfaces spin polarization spin density
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Spin-Lattice Coupling Induced Rich Magnetic States in CrF3 Monolayer 认领 引用
4
作者 Fawei Zheng Yong Lu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第5期263-276,共14页
We systematically studied the spin-lattice couplings in the CrF3monolayer.Our study reveals that the spin exchange constants between the nearest neighbors are notably affected by these couplings.Specifically,the co... We systematically studied the spin-lattice couplings in the CrF3monolayer.Our study reveals that the spin exchange constants between the nearest neighbors are notably affected by these couplings.Specifically,the couplings arise predominantly from three distinct phonon modes,namely the covariant,rotation,and stretch of the Cr-F-Cr-F rhombus.By integrating out the phonon degrees of freedom,we derived an effective spin Hamiltonian featuring four-spin product terms,which yields a remarkably intricate magnetic phase diagram.Significantly,numerous plateau states characterized by fractional magnetizations,including 1/2,1/3,2/3,1/4,1/5,5/8,1/9,2/9,and 3/11,emerge in the vicinity of the phase transition boundary separating ferromagnetic and antiferromagnetic states.These findings show the profound influence of spin-lattice couplings on magnetic properties near the magnetic phase boundaries. 展开更多
关键词 integrating phonon degrees freedomwe spin exchange constants phonon modesnamely magnetic states CrF monolayer effective spin hamiltonian phonon modes spin lattice coupling
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Staggered Nonlinear Spin Generations in Centrosymmetric Altermagnets under Electric Current 认领 引用
5
作者 Jie Zhang Ruijing Fang +1 位作者 Zhichao Zhou Xiao Li 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期217-227,共11页
Current-induced spin generations are of significant importance for electrically controllable magnetization.Due to symmetry constraints,linear spin generation is absent in centrosymmetric magnets and nonlinear contribu... Current-induced spin generations are of significant importance for electrically controllable magnetization.Due to symmetry constraints,linear spin generation is absent in centrosymmetric magnets and nonlinear contributions become crucial.However,nonlinear spin generations have few examples in centrosymmetric compensated magnets with opposite-spin sublattices,which hinders electric control of associated magnetization.Here,we study nonlinear spin generations in altermagnets,a new type of compensated magnets.In a square altermagnetic model,both staggered and uniform nonlinear spin generations appear at opposite-spin sublattices.They vary as the magnetization direction rotates,with emerging out-of-plane components that can be utilized in perpendicular magnetization switching of high-density storage devices.By first-principles calculations,out-of-plane,staggered nonlinear spin generations are found to be considerable in a typical altermagnet,Fe2Se2O monolayer.Our findings provide opportunities for electrically manipulating magnetization and designing energy-efficient magnetic devices based on compensated magnets. 展开更多
关键词 electric current induced spin generations compensated magnetsin centrosymmetric compensated magnets staggered nonlinear spin generations centrosymmetric magnets spin generations electric control centrosymmetric altermagnets
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Spin-Canting Mediated Anomalous Nernst Effect in Ferrimagnetic CoTb Films 认领 引用
6
作者 Yuheng Li Shi Huang +4 位作者 Wei Zhu Chang Pan Pengwei Gong Jianwei Zhang Xuepeng Qiu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期201-207,共7页
The anomalous Nernst effect(ANE),which enables energy conversion and harvesting in ferromagnetic materials through orthogonal charge generation relative to the heat gradient and magnetization,holds great promise for s... The anomalous Nernst effect(ANE),which enables energy conversion and harvesting in ferromagnetic materials through orthogonal charge generation relative to the heat gradient and magnetization,holds great promise for spintronic thermoelectric applications.However,achieving both perpendicular magnetic anisotropy(PMA)and an out-of-plane thermal gradient—two essential prerequisites for highly stable and efficient spintronic devices—contradicts the orthogonality condition required for ANE generation.In this study,we leverage the novel spincanting effect in ferrimagnetic CoTb films to realize a pronounced ANE response near the magnetic compensation temperature,yielding a remarkable ANE coefficient of 0.108μV/K.By further investigating the angular characteristics of the spin-canted state,we optimize and identify the ideal measurement scheme for spin-canting-mediated ANE.Our findings systematically elucidate the unique physical behavior of this unconventional ANE and demonstrate the potential of ferrimagnetic systems with strong PMA for developing high-performance thermoelectric devices. 展开更多
关键词 anomalous nernst effect ane which anomalous nernst effect spintronic thermoelectric energy conversion harvesting spin canting ferromagnetic materials perpendicular magnetic anisotropy pma spintronic devices contradicts
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Low-Threshold Topological Pumping in Toroidal Spin-1 Bose–Einstein Condensate 认领 引用
7
作者 Xue-Ying Yang Peng Liu +3 位作者 Hui-Bo Hong Si-Lin Chen Juan Li Rui-Fang Dong 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第4期48-55,共8页
Singular spin-nematic vortices are unique topological excitations in spin-orbit-coupled spin-1 Bose–Einstein condensates.However,dynamically generating them in harmonic traps requires excessive Raman coupling to over... Singular spin-nematic vortices are unique topological excitations in spin-orbit-coupled spin-1 Bose–Einstein condensates.However,dynamically generating them in harmonic traps requires excessive Raman coupling to overcome the high energy cost of creating a density-depleted core.We demonstrate that a toroidal trapping potential naturally resolves this geometric mismatch.By accommodating the vortex core,the toroidal geometry lowers the formation threshold by∼50%and significantly broadens the stable phase boundary. 展开更多
关键词 harmonic traps spin orbit coupled broadens stable phase boundar singular spin nematic vortices low threshold topological pumping toroidal trapping potential excessive raman coupling formation threshold
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Spin-bias-controlled current rectification and negative magnetoresistance in a quantum dot spin transistor 认领 引用
8
作者 Zhengzhong Zhang Han Hu +2 位作者 Runze Zhu Yanzong Wang Hao Liu 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第7期736-747,共12页
We propose a spin-bias-controlled quantum-dot spin-valve device and systematically investigate its charge and spin transport properties.Numerical results reveal that the parallel magnetic configuration enables gate-tu... We propose a spin-bias-controlled quantum-dot spin-valve device and systematically investigate its charge and spin transport properties.Numerical results reveal that the parallel magnetic configuration enables gate-tunable rectification of both charge and spin currents,whereas no rectification occurs in the antiparallel configuration.Remarkably,in specific gate voltage regimes,the device achieves perfect charge rectification—characterized by complete suppression of reversebias charge currents—while sustaining finite spin currents.Furthermore,a negative magnetoresistance emerges in this system,electrically tunable to its theoretical minimum of -1,accompanied by an antiparallel to parallel current on/off ratio exceeding 106.This behavior implies that within tailored gate voltage regimes,only the antiparallel configuration permits charge conduction,with electron current entirely blocked in the parallel configuration.These results establish spin-bias-driven quantum dot systems as multifunctional platforms for tunable rectification and magnetoresistance control,highlighting their potential for advancing spintronic technologies. 展开更多
关键词 quantum dot spin diode spin valve
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Spin-Excitation Response to Oxygen Deficiency in La3Ni2O7−δThin Films 认领 引用
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作者 Hengyang Zhong Bo Hao +9 位作者 Anni Chen Xinru Huang Chunyi Li Wenting Zhang Chang Liu Kurt Kummer Nicholas Brookes Yuefeng Nie Thorsten Schmitt Xingye Lu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第6期129-134,共6页
Oxygen stoichiometry has been identified as a key parameter controlling superconductivity in the bilayer nickelate La3Ni2O7-δ.Using resonant inelastic x-ray scattering,we systematically investigate the evolu... Oxygen stoichiometry has been identified as a key parameter controlling superconductivity in the bilayer nickelate La3Ni2O7-δ.Using resonant inelastic x-ray scattering,we systematically investigate the evolution of orbital and spin excitations in La3Ni2O7-δthin films with varying oxygen content.In vacuum-annealed samples,the suppression of the 1.6 eV dd excitation underπpolarization reflects apprecia-ble inner apical-oxygen vacancies,which locally disrupt the out-of-plane p-d hybridization and the corresponding interlayer superex-change pathways.Nevertheless,the oxygen-deficient films exhibit spin excitations originating from Q=(0.25,0.25)with a similar disper-sion to the as-grown sample,suggesting a mixed ground state of double spin stripe and spin-charge stripe orders with nearly identical spin correlations.By contrast,the magnon damping rate is slightly enhanced in the vacuum-annealed sample,reflecting a modest increase in electronic disorder associated with oxygen defects.Collectively,these findings reveal that short-range spin correlations in La3Ni2O7-δare insensitive to oxygen-vacancy-induced perturbations,including electron doping and local disruption of interlayer superex-change pathways,even in samples with appreciable oxygen deficiency,where the 1.6 eV dd excitation associated with Ni3dz2-O 2pz hybridization is suppressed by up to 58%. 展开更多
关键词 bilayer nickelate magnon damping resonant inelastic x ray scattering orbital excitations oxygen deficiency spin excitations spin correlations La Ni O
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Interface engineering for high-efficiency spin injection and polarized emission in GaN-based devices 认领 引用
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作者 Qihong Lai Weilin Hu +10 位作者 Mingyu Chen Hongshu Li Ying Ye Guimin Liao Jian Huang Xuanli Zheng Lijing Kong Yaping Wu Xu Li Zhiming Wu Junyong Kang 《Journal of Semiconductors》 EI CAS CSCD 2026年第7期53-60,共8页
Efficient spin injection is crucial for developing high-performance spintronic and optoelectronic devices.To address the issue of low spin injection efficiency caused by lattice mismatch and interface defects in tradi... Efficient spin injection is crucial for developing high-performance spintronic and optoelectronic devices.To address the issue of low spin injection efficiency caused by lattice mismatch and interface defects in traditional CoFeB/MgO tunnel junctions,this work proposes a strategy of using graphene as an insertion layer to optimize interface quality and enhance the spin injection efficiency of tunnel junctions.By systematically investigating three types of tunnel junction structures,namely CoFeB/MgO,CoFeB/graphene/MgO,and CoFeB/MgO/graphene,we demonstrate that the graphene insertion layer can effectively release interface stress,reduce defects and distortions induced by lattice mismatch,and thereby suppress spin scattering.Meanwhile,it alleviates resistance mismatch while preserving high spin polarization.Ultimately,the spin injection polarization is increased from 10.6%to 16.2%,representing an enhancement of approximately 53%.Additionally,the optimized CoFeB/MgO/graphene tunnel junction was integrated into GaN-based spin light-emitting diodes,resulting in an increased circular polarization of electroluminescence from 8.4%to 17.3%.This work provides an interface engineering strategy for achieving efficient spin injection and advancing the development of spin-optoelectronic devices. 展开更多
关键词 spin injection tunnel junction graphene Ⅲ-nitride semiconductors spin light-emitting diodes
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Effects of initial spin orientation on the generation of polarized electron beams from laser wakefield acceleration in plasma 认领 引用
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作者 L.R.Yin X.F.Li +6 位作者 Y.J.Gu N.Cao Q.Kong M.Büscher S.M.Weng M.Chen Z.M.Sheng 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2026年第1期20-28,共9页
The effects of initial spin orientation on the final electron beam polarization in laser wakefield acceleration in a pre-polarized plasma are investigated theoretically and numerically.From the results of variation of... The effects of initial spin orientation on the final electron beam polarization in laser wakefield acceleration in a pre-polarized plasma are investigated theoretically and numerically.From the results of variation of the initial spin direction,the spin dynamics of the electron beam are found to depend on the self-injection mechanism.The effects of wakefields and laser fields are studied using test particle dynamics and particle-in-cell simulations based on the Thomas-Bargmann-Michel-Telegdi equation.Compared with transverse injection,longitudinal injection is found to be preferable for obtaining a highly polarized electron beam. 展开更多
关键词 spin dynamics laser fields test particle dynamics initial spin orientation electron beam laser wakefield acceleration electron beam polarization
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Hybridization Gap and Edge States in Strained-Layer InAs/In0.5Ga0.5Sb Quantum Spin Hall Insulator 认领 引用
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作者 Wenfeng Zhang Peizhe Jia +4 位作者 Wen-kai Lou Xinghao Wang Shaokui Su Kai Chang Rui-Rui Du 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第1期179-183,共5页
The hybridization gap in strained-layer InAs/InxGa1−x Sb quantum spin Hall insulators(QSHIs)is significantly enhanced compared to binary InAs/GaSb QSHI structures,where the typical indium composition,x,ranges be... The hybridization gap in strained-layer InAs/InxGa1−x Sb quantum spin Hall insulators(QSHIs)is significantly enhanced compared to binary InAs/GaSb QSHI structures,where the typical indium composition,x,ranges between 0.2 and 0.4.This enhancement prompts a critical question:to what extent can quantum wells(QWs)be strained while still preserving the fundamental QSHI phase?In this study,we demonstrate the controlled molecular beam epitaxial growth of highly strained-layer QWs with an indium composition of x=0.5.These structures possess a substantial compressive strain within the In0.5Ga0.5Sb QW.Detailed crystal structure analyses confirm the exceptional quality of the resulting epitaxial films,indicating coherent lattice structures and the absence of visible dislocations.Transport measurements further reveal that the QSHI phase in InAs/In0.5Ga0.5Sb QWs is robust and protected by time-reversal symmetry.Notably,the edge states in these systems exhibit giant magnetoresistance when subjected to a modest perpendicular magnetic field.This behavior is in agreement with the2 topological property predicted by the Bernevig–Hughes–Zhang model,confirming the preservation of topologically protected edge transport in the presence of enhanced bulk strain. 展开更多
关键词 strained layer quantum spin hall insulators qshis InAs Ga Sb edge states quantum wells qws be controlled molecular beam epitaxial growth hybridization gap quantum spin Hall insulator
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Robust Hyper-Polarization Protocol of Nuclear Spins via Magic Sequence 认领 引用
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作者 Haiyang Li Yongju Li +1 位作者 Hao Liao Ping Wang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第1期105-128,共24页
Hyperpolarization of nuclear spins is crucial for advancing nuclear magnetic resonance and quantum information technologies,as nuclear spins typically exhibit extremely low polarization at room temperature due to thei... Hyperpolarization of nuclear spins is crucial for advancing nuclear magnetic resonance and quantum information technologies,as nuclear spins typically exhibit extremely low polarization at room temperature due to their small gyromagnetic ratios.A promising approach to achieving high nuclear spin polarization is transferring the polarization of electrons to nuclear spins.The nitrogen-vacancy(NV)center in diamond has emerged as a highly effective medium for this purpose,and various hyperpolarization protocols have been developed.Among these,the pulsed polarization(PulsePol)method has been extensively studied due to its robustness against static energy shifts of the electron spin.In this work,we present a novel polarization protocol and uncover a family of magic sequences for hyperpolarizing nuclear spins,with PulsePol emerging as a special case of our general approach.Notably,we demonstrate that some of these magic sequences exhibit significantly greater robustness compared to the PulsePol protocol in the presence of finite halfpulse duration of the protocol,Rabi and detuning errors.This enhanced robustness positions our protocol as a more suitable candidate for hyper-polarizing nuclear spins species with large gyromagnetic ratios and also ensures better compatibility with high-efficiency readout techniques at high magnetic fields.Additionally,the generality of our protocol allows for its direct application to other solid-state quantum systems beyond the NV center. 展开更多
关键词 transferring polarization electrons hyperpolarization protocols quantum information technologiesas nuclear spins pulse polarization nuclear spin polarization magic sequences nuclear magnetic resonance
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Spin Balance Over Janus Ir-Co Magnetic Atoms for Efficient Acidic Water Oxidation 认领 引用
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作者 Na Li Weiren Cheng +8 位作者 Yuying Liu Ruiqi Liu Sihua Feng Huijuan Wang Liyang Lv Chenglong Liu Jin Ma Chao Wang Wensheng Yan 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第7期215-231,共17页
Herein,spin regulation of the low-spin Ir4+in Ca2IrO4 is realized via a novel spin balance strategy through a Janus Ir-Co structure using high-spin Co3+dopants,achieving the intermediate-spin state of Ir and Co atoms ... Herein,spin regulation of the low-spin Ir4+in Ca2IrO4 is realized via a novel spin balance strategy through a Janus Ir-Co structure using high-spin Co3+dopants,achieving the intermediate-spin state of Ir and Co atoms and enhancing the acidic oxygen evolution reaction(OER)performance of the obtained catalysts(Co-CIO).The optimized 0.2Co-CIO catalyst,with a nominal Co/(Co+Ir)metal atom percentage of 20%,displays exceptional electrochemical water oxidation activity with an ultrasmall overpotential of~200 mV at 10 mA cm-2,ultralarge mass activity of 1110 A gIr-1,and high turnover frequency of 2050 h‒1 under an overpotential of 300 mV in 1 M HClO4,outperforming most recently reported Ir-based oxides catalysts.Molecular and atomic characterizations via in situ X-ray absorption near-edge and Raman spectroscopy demonstrate the acceleration of bridged O‒O formation over the Janus Ir-Co units,indicating a preference for the superoxide path mechanism for Co-CIO.Furthermore,density functional theory calculations rationalize the promotion of the superoxide*O‒O intermediate over the spin-regulated Ir‒O‒Co units,thanks to optimized eg 1 orbital and reduced t2g orbital occupancy.The study presents a rare example of Ir spin regulation via a Janus Ir-Co magnetic structure,thereby promoting acidic OER activity. 展开更多
关键词 Spin state Superoxide path mechanism Intermediate spin state O K edge adsorption spectroscopy In situ Raman
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Recent Advances in Spin-Orbit Torque-Based Programmable Spin Logic Devices:Toward Flexible Implementations 认领 引用
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作者 Ke-Yi Wu Bin Lao +3 位作者 Xuan Zheng Ya-Min Han Run-Wei Li Zhi-Ming Wang 《Rare Metals》 SCIE EI CAS CSCD 2026年第5期75-93,共19页
The rapid expansion of data-intensive applications has highlighted the fundamental limitations of traditional CMOS-based von Neumann architectures,particularly in terms of power efficiency,latency,and flexibility.Spin... The rapid expansion of data-intensive applications has highlighted the fundamental limitations of traditional CMOS-based von Neumann architectures,particularly in terms of power efficiency,latency,and flexibility.Spin logic devices utilizing spin-orbit torque(SOT)present a promising pathway for nonvolatile,low-power,and in-memory computing.By manipulating electric current inputs,SOT can alter the magnetization states or domains,enabling programmable logic functions.When combined with flexible electronics fabrication techniques,these spin logic devices can be adapted into flexible forms to cater to a wide range of applications,such as wearable electronics and human-machine interfaces.In this review,we first trace the evolution of spin logic devices and then explore the operational mechanisms behind various SOT-based devices.We systematically discuss both magnetic-field-assisted and all-electric-driven logic schemes.Additionally,we review recent advancements in flexible SOT logic devices focusing on fabrication methods,thermally assisted low-power switching,and the integration of logic functions on flexible substrates.Finally,we address the current challenges and prospects for SOT-based spin logic devices,emphasizing their potential for low-power,highly integrated,and flexible spintronic computing systems. 展开更多
关键词 all-electric-driven flexible devices programmable spin logic spin-orbit torque
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Dislocated moiré-type Pancharatnam-Berry phase elements enabling the tunable photonic spin Hall effect 认领 引用
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作者 YANKE LI ZHIMIN CHEN +7 位作者 YU ZOU CHENGXIN ZHOU YUFANG LIU JIANLIN ZHAO PENG LI JUN ZHANG SHENG LIU KUN YU 《Photonics Research》 SCIE EI CAS CSCD 2026年第6期2573-2581,共9页
Pancharatnam-Berry(PB)phase elements have garnered significant attention for their spin-dependent phase manipulation capabilities.This study proposes a dislocated moiré-type PB phase element(DMPBPE),which enables... Pancharatnam-Berry(PB)phase elements have garnered significant attention for their spin-dependent phase manipulation capabilities.This study proposes a dislocated moiré-type PB phase element(DMPBPE),which enables dynamic tuning of the PB phase through translational dislocation between two PB phase units.A DMPBPE designed to generate a conical PB phase is fabricated and experimentally characterized,producing a radial frequency of 10π∕mm with a dislocation of 0.2 mm.Functional validation demonstrates that the DMPBPE can induce a dislocation-dependent photonic spin Hall effect(PSHE)in Bessel-like beams with nonlinear trajectories,enabling a tunable progressive or stabilized PSHE.Furthermore,by combining the DMPBPE with beam trajectory engineering,we realize a programmable three-dimensional“PSHE clock.”The element is also applied to optical edge detection,enabling simultaneous control over edge orientation and width.These results establish dislocation as a new degree of freedom for spin-optical manipulation,offering promising prospects for tunable spin-dependent photonic devices. 展开更多
关键词 conical pb phase dislocated moir type Pancharatnam Berry phase elements dynamic tuning conical Pancharatnam Berry phase translational dislocation photonic spin Hall effect dynamic tuning pb phase tunable photonic spin Hall effect
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Strong enhancement of spin-orbit torques and perpendicular magnetic anisotropy in[Pt0.75Ti0.25/Co-Ni multilayer/Ta]_n superlattices 认领 引用
17
作者 Xiaomiao Yin Zhengxiao Li +2 位作者 Jun Kang Changmin Xiong Lijun Zhu 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第1期314-320,共7页
We report the development of the[Pt0.75Ti0.25/Co-Ni multilayer/Ta]_n superlattice with strong spin-orbit torque,large perpendicular magnetic anisotropy,and remarkably low switching current density.We demonstrate... We report the development of the[Pt0.75Ti0.25/Co-Ni multilayer/Ta]_n superlattice with strong spin-orbit torque,large perpendicular magnetic anisotropy,and remarkably low switching current density.We demonstrate that the efficiency of the spin-orbit torque increases nearly linearly with the repetition number n,which is in excellent agreement with the spin Hall effect of the Pt0.75Ti0.25being essentially the only source of the observed spin-orbit torque.The perpendicular magnetic anisotropy field is also substantially enhanced by more than a factor of 2 as n increases from 1 to6.The[Pt0.75Ti0.25/Co-Ni multilayers/Ta]_n superlattice additionally exhibits deterministic,low-current-density magnetization switching despite the very large total layer thicknesses.The unique combination of strong spin-orbit torque,robust perpendicular magnetic anisotropy,low-current-density switching,and excellent high thermal stability makes the[Pt0.75Ti0.25/Co-Ni multilayer/Ta]_n superlattice a highly compelling material candidate for ultrafast,energy-efficient,and long-data-retention spintronic technologies. 展开更多
关键词 spin-orbit torque perpendicular magnetic anisotropy spin Hall effect magnetization switching
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Engineering nonreciprocal damping and polarization of spin waves in ferromagnetic domain wall via Dzyaloshinskii-Moriya interaction and spin-transfer torque 认领 引用
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作者 Xiang Liu Xiguang Wang +2 位作者 Zhixiong Li Xiufeng Han Guanghua Guo 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期29-35,共7页
Manipulation of spin-wave polarization is fundamental for designing novel magnonic devices based on the polarization coding technique.Here,we demonstrate the generation of left-handed polarized spin waves(LPSWs)in a f... Manipulation of spin-wave polarization is fundamental for designing novel magnonic devices based on the polarization coding technique.Here,we demonstrate the generation of left-handed polarized spin waves(LPSWs)in a ferromagnetic domain wall and their polarization modulation through the combined effect of the Dzyaloshinskii-Moriya interaction(DMI)and spin-polarized electric current.A phase diagram delineating the stability regions of left-and right-handed polarized spin waves(RPSWs)is constructed as a function of DMI strength and current density.Our results reveal a pronounced DMI-induced nonreciprocal damping effect,predominantly manifested in RPSWs while leaving LPSWs largely unaffected.This phenomenon enables effective filtering of RPSWs in one direction,allowing the realization of pure LPSW propagation as well as elliptically polarized spin waves with tunable eccentricity.Our work provides a viable method for controlling spin-wave polarization and nonreciprocal propagation in ferromagnetic systems. 展开更多
关键词 spin wave Dzyaloshinskii–Moriya interaction spin-polarized electric current ferromagnetic domain wall
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Spin-State Engineering via Cr3+ Incorporation in Co3O4 Spinel for Efficient Bifunctional Oxygen Electrocatalysis 认领 引用
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作者 Guangjian Xing Mingwang Lu +6 位作者 Guanhua Zhang Qitong Sheng Xiaojing Yang Xiaofei Yu Xinghua Zhang Zunming Lu Lanlan Li 《Carbon Energy》 SCIE EI CAS CSCD 2026年第3期151-161,共11页
The primary challenge in rechargeable Zn-air batteries lies in developing a catalyst capable of simultaneously improving performance for oxygen reduction reaction(ORR)during discharge and oxygen evolution reaction(OER... The primary challenge in rechargeable Zn-air batteries lies in developing a catalyst capable of simultaneously improving performance for oxygen reduction reaction(ORR)during discharge and oxygen evolution reaction(OER)during charge.Engineering spin configuration is essential for enhancing the intrinsic bifunctional activity and stability of spinel Co3O4.Herein,Cr3+is doped into Co3O4,inducing directional distortion of CoO_6 octahedron to modify crystal field splitting energy,pushing CoOhtoward intermediate-spin(IS)configuration(t2g5eg1)with optimized eg occupancy of 1.04.As a result,9%Cr-Co3O4demonstrates an excellent bifunctional activity and remarkable rechargeable Zn-air battery performance that even outperforms Pt/C+RuO2.Density functional theory(DFT)studies reveal that IS CoOhnot only regulates the adsorption energy of ORR/OER species but also transform the O2adsorption configuration from end-on to Griffith configuration,thus modifies the mechanisms of both ORR and OER process and optimize bifunctional activity and selectivity.This work provides mechanistic insight into the spin origin of ORR/OER catalysis and highlights a promising strategy for developing robust bifunctional electrocatalysts. 展开更多
关键词 oxygen electrocatalysis oxygen evolution reaction oxygen reduction reaction spin state spinel Co3O4
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Optical-controlled magnon transport based on spin crossover switched molecular magnets 认领 引用
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作者 Yu-Jing Gao Shuo Chang +3 位作者 Liang Zhao Yin-Shan Meng Zhiyong Qiu Tao Liu 《Smart Molecules》 CSCD 2026年第2期118-124,共7页
Molecule-based devices that combine the advantages of fast time response and extremely low manipulationransmission energy consumption of light,as well as the non-volatile properties of magnetic storage,could potential... Molecule-based devices that combine the advantages of fast time response and extremely low manipulationransmission energy consumption of light,as well as the non-volatile properties of magnetic storage,could potentially be the ideal choice for future information processing.The key to achieving this vision lies in the bridge between light and magnetism,which refers to the innovative magnetooptical functional materials.The discovery of molecular magnets with spincrossover features provides a new inspiration for realizing magneto-optical fusion information technology.Here,we demonstrate that light can reversibly modulate the propagation of magnons in cyanide bridged alternating W(V)-Fe(II)coordination polymer chains,wherein the paramagnetic high-spin and diamagnetic low-spin states of Fe(II)ions can be interconverted by alternating 808-and 473-nm light irradiations.Our experiments exploit microwaves for spin injection and detection,revealing that characteristic signal peaks at 8.28–8.60 GHz can be modulated by alternating light irradiation.The experimental results relate this phenomenon to the difference in magnon excitation between different spin states resulting from photo-induced spin-state switching.This photo-modulated spin transport device,which exhibits the properties of nonvolatility and reproducibility,provides a revolutionary strategy for modulating magnons and paving the way for optically tunable,ultrafast,low-power,and organic-insulator-based spin-logic devices. 展开更多
关键词 magnon transport optical-control spin crossover spintronics
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