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相关论文: Current-induced orbital magnetization in systems w…

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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

The relationship between the modern and classical Landau's approach to carrier orbital magnetization is studied theoretically within the envelope function approximation, taking ferromagnetic (Ga,Mn)As as an example. It is shown that while…

材料科学 · 物理学 2014-08-04 Cezary Śliwa , Tomasz Dietl

In solids, electronic Bloch states are formed by atomic orbitals. While it is natural to expect that orbital composition and information about Bloch states can be manipulated and transported, in analogy to the spin degree of freedom…

介观与纳米尺度物理 · 物理学 2021-10-12 Dongwook Go , Daegeun Jo , Hyun-Woo Lee , Mathias Kläui , Yuriy Mokrousov

The spin dynamics of electrons in chiral molecular systems remain a topic of intense interest, particularly regarding whether geometric chirality inherently induces spin polarization in current-carrying electrons. In this work, we employ ab…

Current-induced spin polarization (CISP) is rederived in ballistic spin-orbit-coupled electron systems, based on equilibrium statistical mechanics. A simple and useful picture is correspondingly proposed to help understand the CISP and…

介观与纳米尺度物理 · 物理学 2008-10-24 Ming-Hao Liu , Son-Hsien Chen , Ching-Ray Chang

We calculate orbital spin-dependent magnetization in a two-dimensional electron gas with spin-orbit interaction of Rashba type. Such an orbital magnetization is admitted by the time-reversal symmetry of the system, and gives rise to spin…

介观与纳米尺度物理 · 物理学 2016-11-09 A. Dyrdał , V. K. Dugaev , J. Barnaś

Using the Green function formalism we calculate a current-induced spin polarization of weakly magnetized graphene with Rashba spin-orbit interaction. In a general case, all components of the current-induced spin polarization are nonzero,…

介观与纳米尺度物理 · 物理学 2015-10-13 A. Dyrdal , J. Barnas

In experiments and applications usually the spin magnetic moment of magnons is considered. In this Paper we identify an additional degree of freedom of magnons: an \emph{orbital} magnetic moment brought about by spin-orbit coupling.Our…

强关联电子 · 物理学 2020-09-16 Robin R. Neumann , Alexander Mook , Jürgen Henk , Ingrid Mertig

Profiles of the spin and orbital angular momentum accumulations induced by a longitudinally applied electric field are explored in nanoribbons of $p$-band systems with a honeycomb lattice. We show that nanoribbons with zigzag borders can…

介观与纳米尺度物理 · 物理学 2021-10-05 Tarik P. Cysne , Filipe S. M. Guimarães , Luis M. Canonico , Tatiana G. Rappoport , R. B. Muniz

Spin current plays a central role in spintronics. In particular, finding more efficient ways to generate spin current has been an important issue and studied actively. For example, representative methods of spin current generation include…

介观与纳米尺度物理 · 物理学 2017-06-28 Keita Hamamoto , Motohiko Ezawa , Kun Woo Kim , Takahiro Morimoto , Naoto Nagaosa

Converting charge current into spin current is one of the main mechanisms exploited in spintronics. One prominent example is the Edelstein effect, namely the generation of a magnetization in response to an external electric field, which can…

In materials with spin-momentum locked spin textures, such as Rashba states and topological surface states, the current-induced shift of the Fermi contour in the k space leads to spin polarization, known as the Edelstein effect, which…

介观与纳米尺度物理 · 物理学 2024-12-05 Xing-Guo Ye , Peng-Fei Zhu , Wen-Zheng Xu , Tong-Yang Zhao , Zhi-Min Liao

The magnetic response of strongly localized electrons to a time-dependent vector potential is considered. The orbital magnetic moment of the system, away from steady-state conditions, is obtained. The expression involves the tunneling and…

凝聚态物理 · 物理学 2009-10-28 Y. Galperin , O. Entin-Wohlman

We propose a general theory of charge, spin, and orbital diffusion based on Keldysh formalism. Our findings indicate that the diffusivity of orbital angular momentum in metals is much lower than that of spin or charge due to the strong…

介观与纳米尺度物理 · 物理学 2024-10-28 Xiaobai Ning , A. Pezo , Kyoung-Whan Kim , Weisheng Zhao , Kyung-Jin Lee , Aurelien Manchon

Spin Hall effect, an electric generation of spin current, allows for efficient control of magnetization. Recent theory revealed that orbital Hall effect creates orbital current, which can be much larger than spin Hall-induced spin current.…

Spin Hall effect in a nonlocal spin-injection device is theoretically studied. Using a nonlocal spin-injection technique, a pure spin current is created in a nonmagnetic metal (N). The spin current flowing in N is deflected by spin-orbit…

介观与纳米尺度物理 · 物理学 2015-06-25 S. Takahashi , S. Maekawa

We present the current-induced switching of the internal magnetization direction in a magnetic topological insulator/topological insulator heterostructure in the quantum anomalous Hall regime. The switching process is based on the bias…

The theory of bulk orbital magnetization has been formulated both in reciprocal space based on Berry curvature and related quantities, and in real space in terms of the spatial average of a quantum mechanical local marker. Here we consider…

介观与纳米尺度物理 · 物理学 2023-03-15 Daniel Seleznev , David Vanderbilt

Currents induce magnetization torques via spin-transfer when the spin angular momentum is conserved or via relativistic spin-orbit coupling. Beyond simple models, the relationship between material properties and spin-orbit torques is not…

介观与纳米尺度物理 · 物理学 2013-08-27 Kjetil M. D. Hals , Arne Brataas

A mechanism of current-induced magnetization reversal based on the parametric resonance is described. The source of the magnetization reversal is a current-induced magnetic field, which is applied perpendicularly to the easy axis of…

介观与纳米尺度物理 · 物理学 2021-04-28 Vadym Zayets