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Spin-orbit coupling (SOC) can provide essential tools to manipulate electron spins in two-dimensional materials like graphene, which is of great interest for both fundamental physics and spintronics application. In this paper, we report the…

介观与纳米尺度物理 · 物理学 2021-10-12 Shimin Cao , Chuanwu Cao , Shibing Tian , Jian-Hao Chen

We have studied the effect of spin-orbital coupling (SOC) on electronic transport properties of the thermoelectric material $\beta$-K$_{2}$Bi$_{8}$Se$_{13}$ via magnetoresistance (MR) measurements. We found that the strong SOC in this…

介观与纳米尺度物理 · 物理学 2014-02-18 J. Hu , J. Y. Liu , Z. Q. Mao

We demonstrate strong anisotropic spin-orbit interaction (SOI) in graphene induced by monolayer WS$_2$. Direct comparison between graphene/monolayer WS$_2$ and graphene/bulk WS$_2$ system in magnetotransport measurements reveals that…

介观与纳米尺度物理 · 物理学 2018-04-12 Taro Wakamura , Francesco Reale , Pawel Palczynski , Sophie Guéron , Cecilia Mattevi , Hélène Bouchiat

Pseudo-magnetic field becomes an experimental reality after the observation of zero-field Landau level-like quantization in strained graphene, but it is not expected that the time-reversal symmetric pseudo-magnetic fields will have any…

介观与纳米尺度物理 · 物理学 2013-08-13 Wen-Yu He , Lin He

The one-parameter scaling theory of localization predicts that all states in a disordered two-dimensional system with broken time reversal symmetry are localized even in the presence of strong spin-orbit coupling. While at constant strong…

无序系统与神经网络 · 物理学 2017-06-27 Ying Su , C. Wang , Y. Avishai , Yigal Meir , X. R. Wang

We study spin-dependent diffusive transport in the presence of a tunable spin-orbit (SO) interaction in a two-dimensional electron system. The spin precession of an electron in the SO coupling field is expressed in terms of a covariant…

介观与纳米尺度物理 · 物理学 2009-11-13 Yaroslav Tserkovnyak , Shimul Akhanjee

Spin-orbit coupling (SOC) and electron-electron interaction can mutually influence each other and give rise to a plethora of intriguing phenomena in condensed matter systems. In pristine bilayer graphene, which has weak SOC, intrinsic…

The effect of weak localization on spin relaxation in a two-dimensional system with a spin-split spectrum is considered. It is shown that the spin relaxation slows down due to the interference of electron waves moving along closed paths in…

介观与纳米尺度物理 · 物理学 2009-11-10 I. S. Lyubinskiy , V. Yu. Kachorovskii

We investigate the effect of spin-orbit coupling on the behavior of magnetic impurity at the edge of a zigzag graphene ribbon by means of quantum Monte Carlo simulations. A peculiar interplay of Kane-Mele type spin-orbit and impurity-host…

强关联电子 · 物理学 2013-08-09 F. M. Hu , T. O. Wehling , J. E. Gubernatis , Thomas Frauenheim , R. M. Nieminen

Van der Waals heterostructures based on two-dimensional materials have recently become a very active topic of research in spintronics, both aiming at a fundamental description of spin dephasing processes in nanostructures and as a potential…

介观与纳米尺度物理 · 物理学 2021-03-03 Anderson L. R. Barbosa , Jorge Gabriel G. S. Ramos , Aires Ferreira

Spin splitting of the energy spectrum of single-layer graphene on Au/Ni(111) substrate has been recently reported. I show that eigenstates of spin-orbit coupled graphene are polarized in-plane and perpendicular to electron momentum $\bf k$;…

介观与纳米尺度物理 · 物理学 2015-05-13 Emmanuel I. Rashba

We introduce a $p_{z}-d$ coupling model Hamiltonian for the $\pi$-graphene/Au bands that predicts a rather large intrinsic spin-orbit (SO) coupling as are being reported in recent experiments and DFT studies. Working within the analytical…

材料科学 · 物理学 2019-10-03 Alejandro Lopez , Luis Colmenarez , Mayra Peralta , Francisco Mireles , Ernesto Medina

Spin-orbit coupling is studied using the quantum interference corrections to conductance in AlGaN/AlN/GaN two-dimensional electron systems where the carrier density is controlled by the persistent photoconductivity effect. All the samples…

材料科学 · 物理学 2009-11-11 C. Kurdak , N. Biyikli , U. Ozgur , H. Morkoc , V. I. Litvinov

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

First-principles calculations of the spin-orbit coupling in graphene with hydrogen adatoms in dense and dilute limits are presented. The chemisorbed hydrogen induces a giant local enhancement of spin-orbit coupling due to $sp^3$…

介观与纳米尺度物理 · 物理学 2013-06-18 Martin Gmitra , Denis Kochan , Jaroslav Fabian

Localization properties of the doped Z_2-topological insulator are studied by weak localization theory. The disordered Kane-Mele model for graphene is taken as a prototype, and analyzed with attention to effects of the topological mass…

介观与纳米尺度物理 · 物理学 2009-11-27 Ken-Ichiro Imura , Yoshio Kuramoto , Kentaro Nomura

Spontaneous intervalley coherence is suspected in several different graphene multilayer systems, but is difficult to confirm because of a paucity of convenient experimental signatures. Here we suggest that magneto-conductance features…

介观与纳米尺度物理 · 物理学 2023-12-19 Nemin Wei , Yongxin Zeng , A. H. MacDonald

Broken symmetries in graphene affect the massless nature of its charge carriers. We present an analysis of scattering by defects in graphene in the presence of spin-orbit interactions (SOIs). A characteristic constant ratio ($\simeq 2$) of…

介观与纳米尺度物理 · 物理学 2014-04-10 Mahmoud M. Asmar , Sergio E. Ulloa

Disorder in spin-orbit (SO) coupling is an important feature of real low-dimensional electron structures. We study spin relaxation due to such a disorder as well as resulting abilities of spin manipulation. The spin relaxation reveals…

介观与纳米尺度物理 · 物理学 2009-09-03 V. K. Dugaev , E. Ya. Sherman , V. I. Ivanov , J. Barnas

Large spin-orbital proximity effects have been predicted in graphene interfaced with a transition metal dichalcogenide layer. Whereas clear evidence for an enhanced spin-orbit coupling has been found at large carrier densities, the type of…

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