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相关论文: Spin Hall effect in a Kagome lattice driven by Ras…

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Spin-1 chiral semimetal is a new state of quantum matter hosting unconventional chiral fermions that extend beyond the common Dirac and Weyl fermions. B20-type CoSi is a prototypal material that accommodates such an exotic quasiparticle. To…

The current-induced spin-orbit torque-based devices for magnetization switching are commonly relied on the 4d and 5d heavy metals owing to their strong spin-orbit coupling (SOC) to produce large spin current via spin Hall effect (SHE). Here…

材料科学 · 物理学 2025-04-15 Gaurav K. Shukla , Prabhat Kumar , Shinji Isogami

We derive boundary conditions for the coupled spin-charge diffusion equations at a transmitting interface between two-dimensional electron systems with different strengths of the Rashba spin-orbit (SO) coupling $\alpha$, and an electric…

材料科学 · 物理学 2009-11-11 Yaroslav Tserkovnyak , Bertrand I. Halperin , Alexey A. Kovalev , Arne Brataas

We present a topological description of quantum spin Hall effect (QSHE) in a two-dimensional electron system on honeycomb lattice with both intrinsic and Rashba spin-orbit couplings. We show that the topology of the band insulator can be…

介观与纳米尺度物理 · 物理学 2009-11-11 D. N. Sheng , Z. Y. Weng , L. Sheng , F. D. M. Haldane

We theoretically study the influence of the $k$-cubic Rashba spin-orbit coupling (SOC) on the correlation effects of magnetic impurities by combining the variational method and the Hirsch-Fye quantum Monte Carlo (HFQMC) simulations.…

强关联电子 · 物理学 2023-05-10 Xiong-Tao Peng , Fang Lin , Liang Chen , Lin Li , Dong-Hui Xu , Jin-Hua Sun

The spin Hall effect (SHE) enables efficient electrical manipulation of magnetization through the spin Hall current \left(\mathbit{J}_{\mathbit{SHE}}\right), advancing energy-efficient spintronics. In parallel, the orbital Hall effect (OHE)…

We propose a model which includes a nearest-neighbor intrinsic spin-orbit coupling and a dimer Hamiltonian in the Kagom\'{e} lattice and promises to host the transition from the quantum spin Hall insulator to the normal insulator. In…

介观与纳米尺度物理 · 物理学 2015-05-19 Guocai Liu , Shi-Liang Zhu , Shaojian Jiang , Fadi Sun , W. M. Liu

We clarify the ground state phase diagram of the half-filled square-lattice Hubbard model with Rashba spin-orbit coupling (SOC) characterized by the spin-split energy bands due to broken inversion symmetry. Although the Rashba metals and…

强关联电子 · 物理学 2023-01-19 Masataka Kawano , Chisa Hotta

We propose an approach based on the generalized quantum mechanics to deal with the basic features of the spin Hall effect. We begin by considering two decoupled harmonic oscillators on the noncommutative plane and determine the solutions of…

高能物理 - 理论 · 物理学 2013-04-01 Kamal El Asli , Rachid Houca , Ahmed Jellal

We investigate the electronic instabilities in a Kagome lattice with Rashba spin-orbital coupling by the unbiased singular-mode functional renormalization group. At the parent $1/3$-filling, the normal state is a quantum spin Hall system.…

超导电性 · 物理学 2016-08-03 Wan-Sheng Wang , Yuan-Chun Liu , Yuan-Yuan Xiang , Qiang-Hua Wang

In past few decades, Rashba spin-orbit coupling (SOC) has been successfully employed for the emergence of exotic phenomena at the quantum oxide interfaces. In these systems, the combined effect of charge transfer, broken symmetries and SOC…

材料科学 · 物理学 2022-05-24 Megha Vagadia , Jaya Prakash Sahoo , Ankit Kumar , Suman Sardar , Tejas Tank , D. S. Rana

The spin Hall and longitudinal conductivity of a 2D heavy-hole gas with {\it k}-cubic Rashba and Dresselhaus spin-orbit interaction is studied in the ac frequency domain. Using Kubo linear-response theory and a recently proposed definition…

介观与纳米尺度物理 · 物理学 2015-05-14 Arturo Wong , Francisco Mireles

We study the spin-Hall effect in systems with weak cubic Rashba spin-orbit interaction. To this end we derive particle and spin diffusion equations and explicit expressions for the spin-current tensor in the diffusive regime. We discuss the…

无序系统与神经网络 · 物理学 2009-11-11 O. Bleibaum , S. Wachsmuth

We investigate the single-particle and collective excitations of a Rashba spin-orbit coupled atomic Fermi gas with attractive interaction, loaded in a two dimensional (2D) square optical lattice, in the presence of an effective out-of-plane…

强关联电子 · 物理学 2017-04-05 Zlatko Koinov , Shanna Pahl

Physical properties such as the conductivity are usually classified according to the symmetry of the underlying system using Neumann's principle, which gives an upper bound for the number of independent components of the corresponding…

介观与纳米尺度物理 · 物理学 2023-11-14 Longjun Xiang , Fuming Xu , Luyang Wang , Jian Wang

We investigate the intrinsic spin Hall effect in a quantum well semiconductor doped with magnetic impurities, as a means to manipulate the carriers' spin. Using a simple Hamiltonian with Rashba spin-orbit coupling and exchange interactions,…

介观与纳米尺度物理 · 物理学 2014-04-22 T. L. van den Berg , L. Raymond , A. Verga

The well-known experimentally observed \textit{sp}-derived Au(111) Shockley surface states with Rashba spin splitting are perfectly fit by an effective tight-binding model, considering a two-dimensional hexagonal lattice with…

介观与纳米尺度物理 · 物理学 2008-11-15 Ming-Hao Liu , Son-Hsien Chen , Ching-Ray Chang

We study the band structure modulation and spin-Hall effect of a two-dimensional heavy-hole system with $k^3$-Rashba spin-orbit coupling (RSOC), irradiated by linearly polarized light. We find that the band structure becomes anisotropic…

介观与纳米尺度物理 · 物理学 2021-09-15 Ankita Bhattacharya , SK Firoz Islam

We generalize a Landauer-type formula, using a real$\otimes$spin-space Green function technique, to treat spin-dependent transport in quantum-coherent conductors attached to two ferromagnetic contacts. The formalism is employed to study the…

介观与纳米尺度物理 · 物理学 2007-05-23 Branislav K. Nikolic , J. K. Freericks

We report a theoretical investigation on spin-Hall conductance fluctuation of disordered four terminal devices in the presence of Rashba or/and Dresselhaus spin-orbital interactions in two dimensions. As a function of disorder, the…

介观与纳米尺度物理 · 物理学 2007-05-23 Wei Ren , Zhenhua Qiao , Jian Wang , Qingfeng Sun , Hong Guo