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We present low temperature magnetoconductivity measurements of a density-tunable and high mobility two-dimensional electron gas confined in the wide bandgap GaN/AlGaN system. We observed pronounced anti-localization minima in the low-field…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Schmult , M. J. Manfra , A. Punnoose , A. M. Sergent , K. W. Baldwin , R. J. Molnar

Here, we report on angle-resolved photoemission studies of the electronic $\pi$ states of high-quality epitaxial graphene layer on a Ni(111) surface. In this system electron binding energy of the $\pi$ states shows a strong dependence on…

材料科学 · 物理学 2010-10-08 Yu. S. Dedkov , M. Fonin , U. Rüdiger , C. Laubschat

A microscopic approach is developed to scattering of surface states from a non-magnetic linear defect at a surface with strong spin-orbit interaction. Spin-selective reflection resonances in scattering of Rashba-split surface states by an…

介观与纳米尺度物理 · 物理学 2018-01-24 I. A. Nechaev , E. E. Krasovskii

The results of computer simulation of particle motion over the plane with randomly distributed scatters are presented. They are used to analyse the influence of scattering anisotropy on the negative magnetoresistance due to weak…

凝聚态物理 · 物理学 2007-05-23 A. V. Germanenko , V. A. Larionova , G. M. Minkov , S. A. Negashev

A Rashba nanowire is subjected to a magnetic field that assumes opposite signs in two sections of the nanowire, and, thus, creates a magnetic domain wall. The direction of magnetic field is chosen to be perpendicular to the Rashba…

介观与纳米尺度物理 · 物理学 2020-07-01 Flavio Ronetti , Kirill Plekhanov , Daniel Loss , Jelena Klinovaja

We report measurements of magnetoresistance in single-layer graphene as a function of gate voltage (carrier density) at 250 mK. By examining signatures of weak localization (WL) and universal conductance fluctuations (UCF), we find a…

材料科学 · 物理学 2015-05-14 Yung-Fu Chen , Myung-Ho Bae , Cesar Chialvo , Travis Dirks , Alexey Bezryadin , Nadya Mason

The possibility of utilizing the rich spin-dependent properties of graphene has attracted great attention in pursuit of spintronics advances. The promise of high-speed and low-energy consumption devices motivates a search for layered…

The nature of the electronic ground states in strained undoped graphene at weak interaction between electrons is discussed. After providing a lattice realization of the strain-induced axial magnetic field we numerically find the…

介观与纳米尺度物理 · 物理学 2013-07-18 Bitan Roy , Igor F. Herbut

The magnetoresistance of a three-dimensional Rashba material placed on top of a ferromagnetic insulator is theoretically investigated. In addition to the intrinsic Rashba spin-orbit interaction, we also consider extrinsic spin-orbit…

介观与纳米尺度物理 · 物理学 2019-02-21 Sebastian Tölle , Michael Dzierzawa , Ulrich Eckern , Cosimo Gorini

We derive the eigenenergies and eigenstates of electrons in a quantum wire subjected to an external magnetic field. These are calculated in the presence of spin orbit interactions arising from the Rashba (structural inversion asymmetry) and…

介观与纳米尺度物理 · 物理学 2009-11-10 S. Bandyopadhyay , S. Pramanik , M. Cahay

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 Rashba Hamiltonian describes the splitting of the conduction band as a result of spin-orbit coupling in the presence of an asymmetric confinement potential and is commonly used to model the electronic structure of confined narrow-gap…

介观与纳米尺度物理 · 物理学 2009-11-07 Jun-ichiro Inoue , Gerrit E. W. Bauer , Laurens W. Molenkamp

We investigate the transport properties of ballistic quantum wires in the presence of Zeeman spin splittings and a spatially inhomogeneous Rashba interaction. The Zeeman interaction is extended along the wire and produces gaps in the energy…

介观与纳米尺度物理 · 物理学 2009-11-13 David Sanchez , Llorens Serra , Mahn-Soo Choi

Strained graphene with lattice deformations has been demonstrated to give rise to large pseudomagnetic fields and host many exotic properties. Here, we propose a non-magnetic approach to realize a momentum-dependent out-of-plane spin…

介观与纳米尺度物理 · 物理学 2013-10-18 Mudan Yang , Jia-Bin Qiao , Zhao-Dong Chu , Wen-Yu He , Lin He

Manifestations of quantum interference effects in macroscopic objects are rare. Weak localization is one of the few examples of such effects showing up in the electron transport through solid state. Here we show that weak localization…

介观与纳米尺度物理 · 物理学 2018-08-02 V. V. Belykh , A. Yu. Kuntsevich , M. M. Glazov , K. V. Kavokin , D. R. Yakovlev , M. Bayer

We give experimental and theoretical evidence of the Rashba effect at the magnetic rare-earth metal surface Gd(0001). The Rashba effect is substantially enhanced and the Rashba parameter changes its sign when a metal-oxide surface layer is…

材料科学 · 物理学 2009-11-10 O. Krupin , G. Bihlmayer , K. Starke , S. Gorovikov , J. E. Prieto , K. Doebrich , S. Bluegel , G. Kaindl

The carrier-mediated RKKY interaction between local spins plays an important role for the application of magnetically doped graphene in spintronics and quantum computation. Previous studies largely concentrate on the influence of electronic…

介观与纳米尺度物理 · 物理学 2017-08-10 Shu-Hui Zhang , Jia-Ji Zhu , Wen Yang , Kai Chang

We present semiclassical and quantum mechanical results for the effects of a strong magnetic field in Quantum Wires in the presence of Rashba Spin Orbit coupling. Analytical and numerical results show how the perturbation acts in the…

介观与纳米尺度物理 · 物理学 2016-08-31 S. Bellucci , P. Onorato

We study the dependence of the spin splitting on the number $N$ of atomic layers, using first-principles calculation for Au(111) surface. When the slab of the atomic layers is sufficiently thick, the lower split state has a minimum away…

材料科学 · 物理学 2015-05-28 Taichi Kosugi , Takashi Miyake , Shoji Ishibashi

The z axis magnetization of a two dimensional electron gas with contact repulsive interaction and in presence of a Rashba potential is computed by means of quantum field theory at second order. A striking effect of the pure Rashba…

介观与纳米尺度物理 · 物理学 2011-12-21 Alberto Ambrosetti , Pier Luigi Silvestrelli , Flavio Toigo