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Proximity-induced fine features and spin-textures of the electronic bands in graphene-based van der Waals heterostructures can be explored from the point of tailoring a twist angle. Here we study spin-orbit coupling and exchange coupling…

Mesoscale and Nanoscale Physics · Physics 2023-02-28 Karol Szałowski , Marko Milivojević , Denis Kochan , Martin Gmitra

Spin currents in a two dimensional electron gas with Rashba-type spin orbit coupling are derived from a spin connection. Using a functional integral method, we recover the result derived by Sinova {\em et al.}$[ \mathrm{Phys.Rev. Lett. 92,…

Materials Science · Physics 2007-05-23 A. Rebei O. Heinonen

A recent experiment showed that proximity induced Ising spin-orbit coupling enhances the spin-triplet superconductivity in Bernal bilayer graphene. Here, we show that, due to the nearly perfect spin rotation symmetry of graphene, the…

We theoretically investigate the spin injection from a ferromagnetic silicene to a normal silicene (FS/NS), where the magnetization in the FS is assumed from the magnetic proximity effect. Based on a silicene lattice model, we demonstrated…

Strongly Correlated Electrons · Physics 2017-06-23 H. -Y. Tian , N. Xu , G. Luo , Ch. -D. Ren

We investigate magnetotransport in a ferromagnetic/normal/ferromagnetic graphene junction where a gate electrode is attached to the normal segment. It is shown that the charge conductance can be maximal at an antiparallel configuration of…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Takehito Yokoyama , Jacob Linder

The zero-temperature magnetic field-dependent conductance of electrons through a one-dimensional non-interacting tight-binding chain with an interacting {\it side} dot is reviewed and analized further. When the number of electrons in the…

Strongly Correlated Electrons · Physics 2007-05-23 M. E. Torio , K. Hallberg , C. Proetto

We investigate the longitudinal spin relaxation arising due to spin-flip transitions accompanied by phonon emission in quantum dots where the strength of the Rashba spin-orbit coupling is a random function of the lateral (in-plane)…

Disordered Systems and Neural Networks · Physics 2009-11-11 E. Ya. Sherman , D. J. Lockwood

We consider Rashba spin-orbit effects on spin transport driven by an electric field in semiconductor quantum wells. We derive spin diffusion equations that are valid when the mean free path and the Rashba spin-orbit interaction vary on…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Arne Brataas , A. G. Mal'shukov , Yaroslav Tserkovnyak

We investigate the electrical conductivity of spin-polarized graphene in the presence of short-ranged magnetic scatterers within the relaxation time approximation and the semi-classical Boltzmann approach. Spin-flip scattering of the…

Mesoscale and Nanoscale Physics · Physics 2013-12-18 B. Zare Rameshti , A. G. Moghaddam , S. H. Abedinpour , S. Abdizadeh , M. Zareyan

We investigate the production of spin-polarized currents in corrugated graphene nanoribbons. Such corrugations are modeled as multiple regions with Rashba spin-orbit interactions, where concave and convex curvatures are treated as Rashba…

Mesoscale and Nanoscale Physics · Physics 2020-07-08 Hernán Santos , A. Latgé , L. Brey , Leonor Chico

Starting from a microscopic tight-binding model and using second order perturbation theory, we derive explicit expressions for the intrinsic and Rashba spin-orbit interaction induced gaps in the Dirac-like low-energy band structure of an…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Hongki Min , J. E. Hill , N. A. Sinitsyn , B. R. Sahu , Leonard Kleinman , A. H. MacDonald

We study crossed Andreev reflection (CAR) of electrons or holes in normal metal-superconductor-normal metal junctions and highlight some very strong effects of the underlying lattice. In particular, we demonstrate that for sharp interfaces…

Mesoscale and Nanoscale Physics · Physics 2013-06-17 François Crépin , Hans Hettmansperger , Patrik Recher , Björn Trauzettel

We develop a theory of designing slit experiments in two-dimensional electron systems with the Rashba spin-orbit interaction. By simulating the spatiotemporal dynamics of electrons passing through a single slit or a double slit, we find…

Mesoscale and Nanoscale Physics · Physics 2020-01-22 Kotaro Shimizu , Masahito Mochizuki

Highly-doped graphene samples show the conductance reduced and the shot-noise power enhanced compared to standard ballistic systems in two-dimensional electron gas. These features can be understood within a model assuming incoherent…

Mesoscale and Nanoscale Physics · Physics 2024-06-25 Adam Rycerz , Katarzyna Rycerz , Piotr Witkowski

The aim of the paper is to study the electron spin direction dependence on momentum due to the presence of Rashba spin-orbit coupling in the pseudo-gap phase of Bi2212 bilayer. The non-trivial spin texture in k-space is found tuneable by…

Superconductivity · Physics 2022-05-25 Udai Prakash Tyagi , Partha Goswami

We investigate the properties of the electron spin-transmission through an Aharonov-Bohm interferometer with an embedded multilevel quantum dot containing magnetic impurities. A suitable formalism is developed. The amplitude and the phase…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Aldea , M. Tolea , J. Zittartz

Janus dichalcogenide multilayers provide a paradigmatic platform to engineer electronic phenomena dominated by spin-orbit coupling. Their unique spin-orbit effects stem from local mirror symmetry breaking in each layer, which induces a…

Mesoscale and Nanoscale Physics · Physics 2021-07-28 D. Soriano , J. L. Lado

We investigate the electron transport through a two-dimensional semiconductor with a nonuniform Rashba spin-orbit interaction. Due to the combination of the coherence effect and the Rashba interaction, a spontaneous spin-polarized current…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Qing-feng Sun , X. C. Xie

We have calculated the optical conductivity of a disorder-free single graphene sheet in the presence of spin-orbit coupling, using the Kubo formalism. Both intrinsic and structural-inversion-asymmetry induced types of spin splitting are…

Mesoscale and Nanoscale Physics · Physics 2010-01-21 P. Ingenhoven , J. Z. Bernad , U. Zuelicke , R. Egger

We investigate the tunneling effect of a Corbino disk in graphene in the presence of a variable magnetic flux $\Phi_{i}$ created by a solenoid piercing the inner disk under the effect of a finite mass term in the disk region $ (R_1< r<R_2)…

Mesoscale and Nanoscale Physics · Physics 2021-12-15 A. Babe Cheikh , A. Bouhlal , A. Jellal , E. H. Atmani
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