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We measured spin transport in nonferromagnetic (NM) metallic multilayers from the contribution to damping due to spin pumping from a ferromagnetic Co90Fe10 thin film. The multilayer stack consisted of NM1/NM2/Co90Fe10(2 nm)/NM2/NM3 with…

介观与纳米尺度物理 · 物理学 2013-05-23 C. T. Boone , H. T. Nembach , J. M. Shaw , T. J. Silva

We theoretically investigate a nonlinear spin Hall effect in $\mathcal{PT}$-symmetric antiferromagnetic metals, which serve as an efficient spin current generator. We elucidate that an emergent spin-dependent Berry curvature dipole is a…

介观与纳米尺度物理 · 物理学 2022-09-23 Satoru Hayami , Megumi Yatsushiro , Hiroaki Kusunose

The transverse current (j_H) due to anomalous Hall effect (AHE) is usually assumed to be perpendicular to the magnetization (m) in ferromagnetic materials, which governs the experiments in spintronics. Generally, this assumption is derived…

介观与纳米尺度物理 · 物理学 2025-07-02 Lulu Li , Junwen Sun , Lei Wang , X. R. Wang , Ke Xia

The resistance of a heavy metal can be modulated by an adjacent magnetic material through the combined effects of the spin Hall effect, inverse spin Hall effect, and dissipation of the spin accumulation at the interface. This phenomenon is…

We report on electronic transport measurements of electrostatically gated nano-devices of the semimetal WTe\textsubscript{2}. High mobility metallic behavior is achieved in the 2D limit by encapsulating thin flakes in an inert atmosphere.…

介观与纳米尺度物理 · 物理学 2017-02-01 Valla Fatemi , Quinn D. Gibson , Kenji Watanabe , Takashi Taniguchi , Robert J. Cava , Pablo Jarillo-Herrero

We identify a sizable non-linear anomalous Hall effect in the electrical response of spin-3/2 heavy holes in zincblende semiconductor nanostructures. The response is driven by a quadrupole interaction with the electric field enabled by…

介观与纳米尺度物理 · 物理学 2023-01-25 Sina Gholizadeh , Dimitrie Culcer

The search for superconducting systems exhibiting nonreciprocal transport and, specifically, the diode effect, has proliferated in recent years. This trend encompasses a wide variety of systems, including planar hybrid structures,…

超导电性 · 物理学 2024-02-28 Tim Kokkeler , Ilya Tokatly , Sebastian Bergeret

The observation of large nonlocal resistances near the Dirac point in graphene has been related to a variety of intrinsic Hall effects, where the spin or valley degrees of freedom are controlled by symmetry breaking mechanisms. Engineering…

介观与纳米尺度物理 · 物理学 2019-11-15 Mário Ribeiro , Stephen R. Power , Stephan Roche , Luis. E. Hueso , Fèlix Casanova

We predict two spin-dependent transport phenomena in two-dimensional electron systems, which are induced by spatially fluctuating Rashba spin-orbit interaction. When the electron gas is magnetized, the random Rashba interaction leads to the…

介观与纳米尺度物理 · 物理学 2012-11-26 V. K. Dugaev , M. Inglot , E. Ya. Sherman , J. Berakdar , J. Barnas

We study both the intrinsic and extrinsic spin Hall effect in spin-valley coupled monolayers of transition metal dichalcogenides. We find that whereas the skew-scattering contribution is suppressed by the large band gap, the side-jump…

介观与纳米尺度物理 · 物理学 2013-09-20 Wen-Yu Shan , Hai-Zhou Lu , Di Xiao

Using a multi-conduction-channel model, we redefined the micromechanism of spin Hall magnetoresistance (SMR). Four conduction channels are created by spin accumulation of nonpolarized electron flow at top, bottom, left and right interfaces…

材料科学 · 物理学 2015-02-17 Yan-Qing Zhang , Hua-Rui Fu , Niu-Yi Sun , Wen-Ru Che , Ding Ding , Juan Qin , Cai-Yin You , Zhen-Gang Zhu , Rong Shan

Relativistic band theoretical calculations reveal that intrinsic spin Hall conductivity in hole-doped archetypical semiconductors Ge, GaAs and AlAs is large $[\sim 100 (\hbar/e)(\Omega cm)^{-1}]$, showing the possibility of spin Hall effect…

材料科学 · 物理学 2009-11-11 G. Y. Guo , Yugui Yao , Qian Niu

Metallic antiferromagnets with noncollinear orientation of magnetic moments provide a playground for investigating spin-dependent transport properties by analysis of the anomalous Hall effect. The intermetallic compound Mn5Si3 is an…

材料科学 · 物理学 2016-03-10 C. Sürgers , W. Kittler , T. Wolf , H. v. Loehneysen

Anomalous Hall effect arising from the noncoplanar spin configuration (chirality) is discussed as a probe of the chiral order in spin glasses. It is shown that the Hall coefficient yields direct information about the linear and nonlinear…

无序系统与神经网络 · 物理学 2009-11-07 Hikaru Kawamura

A theoretical formulation of magnetoresistance effect in a metallic ferromagnetic/nonmagnetic bilayer originated from the charge-spin conversion by the anomalous Hall effect is presented. Analytical expressions of the longitudinal and…

介观与纳米尺度物理 · 物理学 2016-11-28 Tomohiro Taniguchi

We report magnon spin transport in nickel ferrite (NiFe$_2$O$_4$, NFO)/ platinum (Pt) bilayer systems at room temperature. A nonlocal geometry is employed, where the magnons are excited by the spin Hall effect or by the Joule heating…

材料科学 · 物理学 2017-04-14 J. Shan , P. Bougiatioti , L. Liang , G. Reiss , T. Kuschel , B. J. van Wees

An oscillographic study of the Hall voltage with an unpolarized alternating current through a platinum sample revealed choral features of the Hall effect, which clearly demonstrate the presence of the spin Hall effect in metals with a…

介观与纳米尺度物理 · 物理学 2021-01-27 Yu. N. Chiang , M. O. Dzyuba

We predict spin Hall angles up to 80% for ultrathin noble metal films with substitutional Bi impurities. The colossal spin Hall effect is caused by enhancement of the spin Hall conductivity in reduced sample dimension and a strong reduction…

介观与纳米尺度物理 · 物理学 2014-11-26 Christian Herschbach , Dmitry V. Fedorov , Martin Gradhand , Ingrid Mertig

We predict a spin anomalous-Hall unidirectional magnetoresistance (AH-UMR) in conducting bilayers composed of a ferromagnetic layer and a nonmagnetic layer, which does $\textit{not}$ rely on the spin Hall effect in the normal metal…

介观与纳米尺度物理 · 物理学 2022-05-30 M. Mehraeen , Steven S. -L. Zhang

We study the dependence of the intrinsic spin Hall effect on the crystal symmetry and geometry of experiment. The spin current is obtained and the Hall voltage caused by the polarization of the electron spins is computed. The unique…

介观与纳米尺度物理 · 物理学 2009-11-03 E. M. Chudnovsky