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We consider spin Hall effect in a system of massless Dirac fermions in a graphene lattice. Two types of spin-orbit interaction, pertinent to the graphene lattice, are taken into account - the intrinsic and Rashba terms. Assuming perfect…

材料科学 · 物理学 2015-05-14 A. Dyrdal , V. K. Dugaev , J. Barnas

We theoretically study electronic transport through a region with inhomogeneous Rashba spin-orbit (RSO) coupling placed between two normal regions in a monolayer graphene. The inhomogeneous RSO region is characterized by linearly varying…

介观与纳米尺度物理 · 物理学 2016-01-21 Leila Razzaghi , Mir Vahid Hosseini

The spin-orbit interaction in heavy hole gas formed at $p$-doped semiconductor heterojunctions and electron gas at {\mbox SrTiO}${}_3$ surfaces is cubic in momentum. Here we report magnetotransport properties of k-cubic Rashba spin-orbit…

介观与纳米尺度物理 · 物理学 2014-09-15 Alestin Mawrie , Tutul Biswas , Tarun Kanti Ghosh

van der Waals heterostructures assembled from atomically thin crystals are ideal model systems to study spin-orbital coupled transport because they exhibit a strong interplay between spin, lattice and valley degrees of freedom that can be…

介观与纳米尺度物理 · 物理学 2021-08-18 Carmen Monaco , Aires Ferreira , Roberto Raimondi

We investigate the electronic dispersion and transport properties of graphene/WSe$_{2}$ heterostructures in the presence of a proximity induced spin-orbit coupling (SOC) using a low-energy Hamiltonian, with different types of symmetry…

介观与纳米尺度物理 · 物理学 2023-07-07 M. Zubair , P. Vasilopoulos , M. Tahir

Spin Hall effect due to random Rashba spin-orbit coupling in the two-dimensional honeycomb lattice of carbon atoms (graphene) is considered theoretically. Using the Green function method and diagrammatic technique we show that fluctuations…

介观与纳米尺度物理 · 物理学 2012-11-26 A. Dyrdal , J. Barnas

We evaluate the transport coefficients of a two-dimensional electron gas (2DEG) in the presence of a perpendicular magnetic field and of the spin-orbit interaction (SOI) described only by the Rashba term. The SOI mixes the spin-up and…

介观与纳米尺度物理 · 物理学 2016-08-31 X. F. Wang , P. Vasilopoulos

We consider a straight one-dimensional potential step created across a graphene flake. Charge and spin transport through such a potential step are studied in the presence of both intrinsic and extrinsic (Rashba) spin-orbit coupling (SOC).…

介观与纳米尺度物理 · 物理学 2013-05-29 Ai Yamakage , Ken-Ichiro Imura , Jérôme Cayssol , Yoshio Kuramoto

We investigate the effects of Rashba and intrinsic spin-orbit couplings in graphynes. First, we develop a general method to address spin-orbit couplings within the tight-binding theory. Then, we apply this method to $\alpha$, $\beta$, and…

介观与纳米尺度物理 · 物理学 2014-11-13 Guido van Miert , Vladimir Juricic , Cristiane Morais Smith

Graphene is known to have small intrinsic spin-orbit Interaction (SOI). In this review, we demonstrate that SOIs in graphene can be strongly enhanced by proximity effect when graphene is deposited on the top of transition metal…

介观与纳米尺度物理 · 物理学 2021-12-16 Taro Wakamura , Sophie Guéron , Hélène Bouchiat

We consider longitudinal electronic transport in a graphene monolayer with an external in-plane magnetic field and with extrinsic spin-orbit Rashba interaction. Our main interest is in the in-plane magnetoresistance, observed…

介观与纳米尺度物理 · 物理学 2024-10-29 S. Kudła , V. K. Dugaev , J. Barnaś , A. Dyrdał

We use a combination of experimental techniques to demonstrate a general occurrence of spin-orbit interaction (SOI) in graphene on transition metal dichalcogenide (TMD) substrates. Our measurements indicate that SOI is ultra-strong and…

介观与纳米尺度物理 · 物理学 2016-11-02 Zhe Wang , Dong-Keun Ki , Jun Yong Khoo , Diego Mauro , Helmuth Berger , Leonid S. Levitov , Alberto F. Morpurgo

We report a systematic study on strong enhancement of spin-orbit interaction (SOI) in graphene driven by transition-metal dichalcogenides (TMDs). Low temperature magnetotoransport measurements of graphene proximitized to different TMDs…

介观与纳米尺度物理 · 物理学 2019-06-12 T. Wakamura , F. Reale , P. Palczynski , M. Q. Zhao , A. T. C. Johnson , S. Guéron , C. Mattevi , A. Ouerghi , H. Bouchiat

Theoretical investigation of Dirac electrons in electrically modulated graphene under perpendicular magnetic field B is presented. We have carried out a detailed study of modulation effect on Dirac electrons, which determine its electrical…

介观与纳米尺度物理 · 物理学 2023-11-21 M Arsalan Ali

We use large-scale DFT calculations to investigate with unprecedented detail the so-called spin-orbit (SO) proximity effect in graphene adsorbed on the Pt(111) and Ni(111)/Au semi-infinite surfaces, previously studied via spin and angle…

材料科学 · 物理学 2018-09-12 Jagoda Slawinska , Jorge I. Cerda

Van der Waals interactions with transition metal dichalcogenides was shown to induce strong spin-orbit coupling (SOC) in graphene, offering great promises to combine large experimental flexibility of graphene with unique tuning capabilities…

介观与纳米尺度物理 · 物理学 2023-10-03 Qing Rao , Wun-Hao Kang , Hongxia Xue , Ziqing Ye , Xuemeng Feng , Kenji Watanabe , Takashi Taniguchi , Ning Wang , Ming-Hao Liu , Dong-Keun Ki

Coulomb screening and excitation spectra of electrons in a graphene layer with spin-orbit interaction (SOI) is studied in the random phase approximation. The SOI opens a gap between the valence and conduction bands of the semi-metal Dirac…

介观与纳米尺度物理 · 物理学 2015-06-25 X. F. Wang , Tapash Chakraborty

Using four-terminal Landauer-B\"{u}ttiker formalism and Green's function technique, in this present paper, we calculate numerically spin Hall conductance (SHC) and longitudinal conductance of a finite size kagome lattice with Rashba…

介观与纳米尺度物理 · 物理学 2012-07-31 Moumita Dey , Santanu K. Maiti , S. N. Karmakar

We study the spin transport theoretically in heterostructures consisting of a ferromagnetic metallic thin film sandwiched between heavy-metal and oxide layers. The spin current in the heavy metal layer is generated via the spin Hall effect,…

介观与纳米尺度物理 · 物理学 2019-01-30 L. Chotorlishvili , Z. Toklikishvili , X. -G. Wang , V. K. Dugaev , J. Barnas , J. Berakdar

We study the quantum interference effects induced by the Aharonov-Casher phase in asymmetrically confined two-dimensional electron and heavy-hole ring structures systems taking into account the electrically tunable spin-orbit (SO)…

介观与纳米尺度物理 · 物理学 2012-04-17 M. F. Borunda , Xin Liu , Alexey A. Kovalev , Xiong-Jun Liu , T. Jungwirth , Jairo Sinova
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