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We theoretically propose a nonreciprocal spin Seebeck effect, i.e., nonreciprocal spin transport generated by a temperature gradient, in antiferromagnetic insulators with broken inversion symmetry. We find that nonreciprocity in…

介观与纳米尺度物理 · 物理学 2018-07-16 Rina Takashima , Yuki Shiomi , Yukitoshi Motome

Spin and valley dependent anomalous Nernst effect are analyzed for monolayer MoS2 and other group-VI dichalcogenides. We find that pure spin and valley currents can be generated perpendicular to the applied thermal gradient in the plane of…

介观与纳米尺度物理 · 物理学 2016-01-19 X. -Q. Yu , Z. -G. Zhu , G. Su , A. -P. Jauho

Spin superfluidity, a phenomenon enabling low dissipative spin transport analogous to superfluidity in liquid helium and superconductivity in electronic systems, has remained a theoretical concept. To realize the spin superfluidity in an…

We have studied the intrinsic spin Hall conductivity of 3d transition metal ferromagnets using first-principles calculations. We find the spin Hall conductivity of bcc Fe and fcc Ni, prototypes of ferromagnetic systems, depends on the…

介观与纳米尺度物理 · 物理学 2020-11-11 Guanxiong Qu , Kohji Nakamura , Masamitsu Hayashi

In antiferromagnetic spintronics, accessing the spin degree of freedom is essential for generating spin currents and manipulating magnetic order, which generally requires lifting spin degeneracy. This is typically achieved through…

介观与纳米尺度物理 · 物理学 2026-04-24 Bo Li , Ding-Fu Shao , Alexey A. Kovalev

The spin-orbit interaction enables interconversion between a charge current and a spin current. It is usually believed that in a nonmagnetic metal (NM) or at a NM/ferromagnetic metal (FM) bilayer interface, the symmetry of spin-orbit…

A pure spin current formed by opposite spins moving in opposite directions is a rank-2 axial tensor which breaks the inversion symmetry. Thus a spin current has a second-order optical susceptibility, with unique polarization-dependence…

其他凝聚态物理 · 物理学 2010-06-30 Jing Wang , Bang-Fen Zhu , Ren-Bao Liu

We report the observation of current-induced spin polarization, the Rashba-Edelstein effect (REE), and its Onsager reciprocal phenomenon, the spin galvanic effect (SGE), in a few-layer graphene/2H-TaS2 heterostructure at room temperature.…

In the framework of phenomenological model we consider dynamics of a compensated collinear antiferromagnet (AFM) in the presence of spin-polarised current. The model is based on the assumption that AFM spins are localised and spin torque is…

材料科学 · 物理学 2010-03-16 H. Gomonay , V. Loktev

Electron motion in spin-orbit torque devices inevitably leads to the Joule heating issue. Magnon torques can potentially circumvent this issue, as it enables the transport of spin angular momentum in insulating magnetic materials. In this…

材料科学 · 物理学 2026-01-12 Yuchen Pu , Guoyi Shi , Chenhui Zhang , Xinhou Chen , Hanbum Park , Hyunsoo Yang

We present measurements of current-induced spin-orbit torques generated by NbSe$_2$, a fully-metallic transition-metal dichalcogenide material, made using the spin-torque ferromagnetic resonance (ST-FMR) technique with NbSe$_{2}$/Permalloy…

介观与纳米尺度物理 · 物理学 2018-01-24 Marcos H. D. Guimaraes , Gregory M. Stiehl , David MacNeill , Neal D. Reynolds , Daniel C. Ralph

Using thin film pillars ~100 nm in diameter, containing two ferromagnetic Co layers of different thicknesses separated by a paramagnetic Cu spacer, we examine effects of torques due to spin-polarized currents flowing perpendicular to the…

介观与纳米尺度物理 · 物理学 2009-10-31 J. A. Katine , F. J. Albert , R. A. Buhrman , E. B. Myers , D. C. Ralph

Magnetic and ferroelectric properties of layered geometrically frustrated cluster compound FeTe$_2$O$_5$Br were investigated with single-crystal neutron diffraction and dielectric measurements. Incommensurate amplitude modulated magnetic…

材料科学 · 物理学 2009-10-01 M. Pregelj , O. Zaharko , A. Zorko , Z. Kutnjak , P. Jeglic , P. J. Brown , M. Jagodic , Z. Jaglicic , H. Berger , D. Arcon

Measurements of polarized neutron scattering were performed on a $S=1/2$ chain multiferroic LiCu$_2$O$_2$. In the ferroelectric ground state with the spontaneous polarization along the c-axis, the existence of transverse spiral spin…

强关联电子 · 物理学 2009-11-13 S. Seki , Y. Yamasaki , M. Soda , M. Matsuura , K. Hirota , Y. Tokura

We theoretically investigate possible effects of electric current on the spin wave dynamics for the N\'{e}el-type antiferromagnetic order in a honeycomb lattice. Based on a general vector decomposition of the spin polarization of conduction…

介观与纳米尺度物理 · 物理学 2022-06-03 Yong Wang , Wang Yao

We propose here a high-frequency spin-Hall nano-oscillator based on a simple magnetic texture, such as a domain wall, located in an antiferromagnet with easy-axis anisotropy type. We show that the spin current, polarized along the…

介观与纳米尺度物理 · 物理学 2023-04-28 Roman V. Ovcharov , Elena G. Galkina , Boris A. Ivanov , Roman S. Khymyn

The electron transport properties of hybrid ferromagnetic|normal metal structures such as multilayers and spin valves depend on the relative orientation of the magnetization direction of the ferromagnetic elements. Whereas the contrast in…

介观与纳米尺度物理 · 物理学 2009-11-11 Arne Brataas , Gerrit E. W. Bauer , Paul J. Kelly

It is shown that the flow of electric current in an altermagnet results in the formation of a homogeneous electron spin orientation in the sample. The spin of the conduction electrons generated in altermagnets with $d$-wave spin-momentum…

介观与纳米尺度物理 · 物理学 2025-03-18 L. E. Golub , L. Šmejkal

We have performed an investigation of the nonlinear magnetic response in ruthenocuprates. A negative, diverging-like peak at the main magnetic transition T_N in RuSr2RECu2O8 (RE = Gd, Y) indicates a possible canted antiferromagnetic order.…

强关联电子 · 物理学 2009-11-13 I. Zivkovic , V. P. S. Awana , H. Berger

A theoretical framework is proposed for the spin-current driven synchronized self-oscillations in ferromagnets in the spin Hall geometry. The spin current generated by the spin Hall effect in a bottom nonmagnetic heavy metal excites a…

介观与纳米尺度物理 · 物理学 2018-09-17 Tomohiro Taniguchi