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In the review article the influence of the Rashba spin-orbit coupling on the two-dimensional electrons and holes in a strong perpendicular magnetic field is described in Landau gauge using the spinor-type two-component wave functions with…

强关联电子 · 物理学 2013-09-05 S. A. Moskalenko , I. V. Podlesny , E. V. Dumanov , A. A. Kiselyov

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 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 report on a general theory for analyzing quantum transport through devices in the Metal-QD-Metal configuration where QD is a quantum dot or the device scattering region which contains Rashba spin-orbital and electron-electron…

介观与纳米尺度物理 · 物理学 2009-11-10 Qing-feng Sun , Jian Wang , Hong Guo

Topological semimetals characterize a novel class of quantum materials hosting Dirac/Weyl fermions. The important features of topological fermions can be exhibited by quantum oscillations. Here we report the magnetoresistance and…

We have studied the spin-orbit interaction in a high mobility two-dimensional electron gas in a GaInAs/InP heterostructure as a function of an applied gate voltage as well as a function of temperature. Highly sensitive magnetotransport…

介观与纳米尺度物理 · 物理学 2009-11-13 Vitaliy A. Guzenko , Thomas Schäpers , Hilde Hardtdegen

We examined the magneto-transport behavior of electrons confined at the conducting LaAlO3/SrTiO3 interface in the low sheet carrier density regime. We observed well resolved Shubnikov-de Haas quantum oscillations in the longitudinal…

材料科学 · 物理学 2015-06-19 Yanwu Xie , Christopher Bell , Minu Kim , Hisashi Inoue , Yasuyuki Hikita , Harold Y. Hwang

We investigate the 2-dimensional Fermi surface of high-mobility LaAlO$_3$/SrTiO$_3$ interfaces using Shubnikov-de Haas oscillations. Our analysis of the oscillation pattern underscores the key role played by the Rashba spin-orbit…

强关联电子 · 物理学 2014-11-24 A. Fête , S. Gariglio , C. Berthod , D. Li , D. Stornaiuolo , M. Gabay , J. -M. Triscone

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

Two-dimensional hole gases in semiconductor quantum wells are promising platforms for spintronics and quantum computation but suffer from the lack of the $\bf{k}$-linear term in the Rashba spin-orbit coupling (SOC), which is essential for…

介观与纳米尺度物理 · 物理学 2021-03-03 Jia-Xin Xiong , Shan Guan , Jun-Wei Luo , Shu-Shen Li

Motivated by emergent phenomena at oxide surfaces and interfaces, particularly those involving transition metal oxides with perovskite crystal structure such as LaTiO3/SrTiO3, we examine the ferromagnetic Kondo lattice model (FKLM) in the…

强关联电子 · 物理学 2015-06-19 Giovany A. Meza , Jose A. Riera

A system composed of a conducting planar strip with Rashba spin-orbit coupling (RSOC), magnetically coupled to a layer of localized magnetic moments, at equilibrium, is studied within a microscopic Hamiltonian with numerical techniques at…

强关联电子 · 物理学 2017-02-08 Jose A. Riera

How ferromagnetic phases emerge in itinerant systems is an outstanding problem in quantum magnetism. Here we consider a repulsive two-component Fermi gas confined in a two dimensional isotropic harmonic potential and subject to a large…

量子气体 · 物理学 2016-04-13 Shang-Shun Zhang , Wu-Ming Liu , Han Pu

Magneto-transport measurements of Shubnikov-de Haas (SdH) oscillations have been performed on two-dimensional electron gases (2DEGs) confined in CdTe and CdMnTe quantum wells. The quantum oscillations in CdMnTe, where the 2DEG interacts…

介观与纳米尺度物理 · 物理学 2015-08-19 J. Kunc , B. A. Piot , D. K. Maude , M. Potemski , R. Grill , C. Betthausen , D. Weiss , V. Kolkovsky , G. Karczewski , T. Wojtowicz

We discuss the transport properties of a quantum spin-Hall insulator with sizable Rashba spin-orbit coupling in a disk geometry. The presence of topologically protected helical edge states allows for the control and manipulation of spin…

介观与纳米尺度物理 · 物理学 2018-08-28 R. Battilomo , N. Scopigno , C. Ortix

The magnetotransport of two dimensional holes in a GaAs/AlGaAs heterostructure is studied experimentally and theoretically. Spin-orbit splitting of the heavy hole band is manifested at high carrier densities in two Shubnikov-de Haas…

介观与纳米尺度物理 · 物理学 2007-05-23 Yuval Yaish , Oleg Prus , Evgeny Buchstab , Gidi Ben Yoseph , Uri Sivan , Iddo Ussishkin , Ady Stern

Spin-orbit interaction is investigated in a dual gated InAs/GaSb quantum well. Using an electric field the quantum well can be tuned between a single carrier regime with exclusively electrons as carriers and a two-carriers regime where…

We investigate the spin-orbit (s-o) interaction in two-dimensional electron gases (2DEGs) in quantum wells with two subbands. From the $8\times 8$ Kane model, we derive a new inter-subband-induced s-o term which resembles the functional…

介观与纳米尺度物理 · 物理学 2013-05-29 Esmerindo S. Bernardes , John Schliemann , Minchul Lee , J. Carlos Egues , Daniel Loss

The anomalous Hall and Nernst effects are considered theoretically within Matsubara-Green's function formalism. The effective Hamiltonian of a magnetized two-dimensional electron gas with cubic Rashba spin-orbit interaction may describe…

介观与纳米尺度物理 · 物理学 2020-03-18 Anna Krzyżewska , Anna Dyrdał

We investigate the efficiency of charge-to-spin conversion in two-dimensional Rashba altermagnets, a class of materials that merge characteristics of both ferromagnets and antiferromagnets. Utilizing quantum linear response theory, we…

介观与纳米尺度物理 · 物理学 2024-09-11 Weiwei Chen , Longhai Zeng , W. Zhu