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Processes which flip the spin of an electron tunneling in a junction made up of magnetic electrodes are studied. It is found that: i) Magnetic impurities give a contribution which increases the resistance and lowers the magnetoresistance,…

介观与纳米尺度物理 · 物理学 2009-10-30 F. Guinea

Recently, proximity-induced spin-orbit coupling (SOC) has been observed in heterostructures consisting of monolayer graphene (ML-G) and transition metal dichalcogenides (TMDCs) such as WSe$_{2}$. Successful tuning of SOC in…

We study the interplay of both Rashba and Dresselhaus spin-orbit couplings (SOCs) and a uniform perpendicular magnetic field $\textbf{B}$ on the transport of a spin-polarized electron along a curved quantum wire. Eigenenergies and…

介观与纳米尺度物理 · 物理学 2014-10-27 Carlos Baldo , Cristine Villagonzalo

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 study origin of Rashba spin-orbit interaction at SrTiO$_3$ surfaces and LaAlO$_3$/SrTiO$_3$ interfaces by considering the interplay between atomic spin-orbit coupling and inversion asymmetry at the surface or interface. We show that, in…

强关联电子 · 物理学 2013-06-26 Younghyun Kim , Roman M. Lutchyn , Chetan Nayak

The transport properties between ferromagnets and high-Tc superconductors are investigated in La0.67Sr0.33MnO3/YBa2Cu3O7-d (LSMO/YBCO)junctions in the geometry of cross-strip lines. The conductance spectra show zero-bias conductance peaks…

超导电性 · 物理学 2009-10-31 A. Sawa , S. Kashiwaya , H. Obara , H. Yamasaki , M. Koyanagi , N. Yoshida , Y. Tanaka

Coupling graphene's excellent electron and spin transport properties with higher spin-orbit coupling material allows tackling the hurdle of spin manipulation in graphene, due to the proximity to van-der-Waals layers. Here we use magneto…

介观与纳米尺度物理 · 物理学 2022-03-08 Chithra H. Sharma , Pai Zhao , Lars Tiemann , Marta Prada , Arti Dangwal Pandey , Andreas Stierle , Robert. H. Blick

We study the dielectric properties of graphene in the presence of Rashba and intrinsic spin-orbit interactions in their most general form, i.e., for arbitrary frequency, wave vector, doping, and spin-orbit coupling (SOC) parameters. The…

介观与纳米尺度物理 · 物理学 2012-11-26 Andreas Scholz , Tobias Stauber , John Schliemann

We study the magnetic-field dependence of Landau levels in graphene proximitized by large spin-orbit coupling materials, such as transition-metal dichalcogenides or topological insulators. In addition to the Rashba coupling, two types of…

介观与纳米尺度物理 · 物理学 2020-10-28 Tobias Frank , Jaroslav Fabian

Interfacial interactions allow the electronic properties of graphene to be modified, as recently demonstrated by the appearance of satellite Dirac cones in the band structure of graphene on hexagonal boron nitride (hBN) substrates. Ongoing…

介观与纳米尺度物理 · 物理学 2015-10-28 Zhe Wang , Dong-Keun Ki , Hua Chen , Helmuth Berger , Allan H. MacDonald , Alberto F. Morpurgo

The electronic transport in a system of two quantum rings side-coupled to a quantum wire is studied via a single-band tunneling tight-binding Hamiltonian. We derived analytical expressions for the conductance and spin polarization when the…

介观与纳米尺度物理 · 物理学 2008-03-31 V. M. Apel , P. A. Orellana , M. Pacheco

We study ballistic transport of spin-polarized electrons through quantum wires in which the strength of the Rashba spin-orbit interaction (SOI) is spatially modulated. Subband mixing, due to SOI, between the two lowest subbands is taken…

介观与纳米尺度物理 · 物理学 2009-11-10 X. F. Wang

Quantum dynamics and kinetics of electrically gated graphene ribbons with lateral n-p and e-n-p junctions under magnetic field are investigated. It is shown that the snake-like states of quasiparticles skipping along the n-p interface do…

介观与纳米尺度物理 · 物理学 2017-04-27 A. M. Kadigrobov

In this study, the Optical conductivity of substitutionary doped graphene is investigated in presence of the Rashba spin orbit coupling (RSOC). Calculations have been performed within the coherent potential approximation (CPA) beyond the…

介观与纳米尺度物理 · 物理学 2020-03-18 S. S. Sadeghi , A. Phirouznia , V. Fallahi

The effects of the spin-orbit interaction on the tunneling magnetoresistance of magnetic tunnel junctions are investigated. A model in which the experimentally observed two-fold symmetry of the anisotropic tunneling magnetoresistance (TAMR)…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Matos-Abiague , J. Fabian

We investigate the effect of strong spin-orbit interaction on the electronic transport through non-magnetic impurities in one-dimensional systems. When a perpendicular magnetic field is applied, the electron spin polarization becomes…

材料科学 · 物理学 2007-05-23 R. G. Pereira , E. Miranda

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)…

介观与纳米尺度物理 · 物理学 2021-12-15 A. Babe Cheikh , A. Bouhlal , A. Jellal , E. H. Atmani

We achieve tunneling spin injection from Co into single layer graphene (SLG) using TiO2 seeded MgO barriers. A non-local magnetoresistance ({\Delta}RNL) of 130 {\Omega} is observed at room temperature, which is the largest value observed in…

介观与纳米尺度物理 · 物理学 2010-11-15 Wei Han , K. Pi , K. M. McCreary , Yan Li , Jared J. I. Wong , A. G. Swartz , R. K. Kawakami

We consider a dilute fluorinated graphene nanoribbon as a spin-active element. The fluorine adatoms introduce a local spin-orbit Rashba interaction that induces spin-precession for electron passing by. In the absence of the external…

介观与纳米尺度物理 · 物理学 2017-12-27 Bartlomiej Rzeszotarski , Alina Mrenca-Kolasinska , Bartlomiej Szafran

Rhombohedral graphene multilayers host various broken-symmetry metallic phases as well as superconductors whose pairing mechanism and order parameter symmetry remain unsettled. Strikingly, experiments have revealed prominent new…

超导电性 · 物理学 2025-07-08 Zhiyu Dong , Étienne Lantagne-Hurtubise , Jason Alicea