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This work elucidates the novel behavior found in a two-dimensional electron gas (2DEG) under a tilted magnetic field in which the field's angle becomes the dominant factor in tuning the spin-splitting rather than the strength of the…

介观与纳米尺度物理 · 物理学 2013-01-01 Rayda Gammag , Cristine Villagonzalo

By varying the orientation of the applied magnetic field with respect to the normal of a two-dimensional electron gas, the chemical potential and the specific heat reveal persistent spin splitting in all field ranges. The corresponding…

介观与纳米尺度物理 · 物理学 2012-01-24 Rayda Gammag , Cristine Villagonzalo

We consider a two-dimensional electron gas (2DEG) with the Rashba spin-orbit interaction (SOI) in presence of a perpendicular magnetic field. We derive analytical expressions of the density of states (DOS) of a 2DEG with the Rashba SOI in…

介观与纳米尺度物理 · 物理学 2015-05-30 S. K. Firoz Islam , Tarun Kanti Ghosh

We study the spin Hall effect of a two-dimensional electron gas in the presence of a magnetic field and both the Rashba and Dresselhaus spin-orbit interactions. We show that the value of the spin Hall conductivity, which is finite only if…

介观与纳米尺度物理 · 物理学 2009-11-13 P. Lucignano , R. Raimondi , A. Tagliacozzo

The transport properties of a magnetic two dimensional electron gas consisting of a modulation doped n type HgMnTe/HgCdTe quantum well, QW, have been investigated. By analyzing the Shubnikov-de Haas oscillations and the node positions of…

强关联电子 · 物理学 2007-05-23 Y. S. Gui , C. R. Becker , J. Liu , V. Daumer , V. Hock , H. Buhmann , L. W. Molenkamp

The level splittings induced by a horizontal magnetic field in a parabolic two-dimensional quantum dot with spin-orbit interaction are obtained. Characteristic features induced by the spin-orbit coupling are the appearance of zero-field…

介观与纳米尺度物理 · 物理学 2009-11-10 Manuel Valin-Rodriguez , Antonio Puente , Llorens Serra

We study the disorder effect of resonant spin Hall effect in a two-dimension electron system with Rashba coupling in the presence of a tilted magnetic field. The competition between the Rashba coupling and the Zeeman coupling leads to the…

介观与纳米尺度物理 · 物理学 2009-11-04 Zhan-Feng Jiang , Shun-Qing Shen , Fu-Chun Zhang

We present results on the effects of spin-orbit coupling on the electronic structure of few-electron interacting quantum dots. The ground-state properties as a function of the number of electrons in the dot $N$ are calculated by means of…

介观与纳米尺度物理 · 物理学 2009-11-07 M. Governale

We present a theoretical study of magnetoplasmon spectrum of a two-dimensional electron gas in the presence of Rashba spin-orbit interaction (RSOI), one-dimensional weak electric modulation and a perpendicular magnetic field. The…

介观与纳米尺度物理 · 物理学 2015-05-18 M. Tahir , K. Sabeeh

The band structure and magnetotransport of a two-dimensional electron gas (2DEG), in the presence of the Rashba (RSOI) and Dresselhaus (DSOI) terms of the spin-orbit interaction and of a perpendicular magnetic field, is investigated. Exact…

介观与纳米尺度物理 · 物理学 2009-11-11 X. F. Wang , P. Vasilopoulos

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

Using an exact diagonalization approach we show that one- and two-electron InAs quantum dots exhibit avoided crossing in the energy spectra that are induced by the spin-orbit coupling in the presence of an in-plane external magnetic field.…

介观与纳米尺度物理 · 物理学 2011-07-01 M. P. Nowak , B. Szafran , F. M. Peeters , B. Partoens , W. Pasek

We study the local equilibrium properties of two-dimensional electron gases at high magnetic fields in the presence of random smooth electrostatic disorder, Rashba spin-orbit coupling, and the Zeeman interaction. Using a systematic magnetic…

介观与纳米尺度物理 · 物理学 2014-04-29 Daniel Hernangomez-Perez , Serge Florens , Thierry Champel

The coupling between Zeeman spin splitting and Rashba spin-orbit terms has been studied experimentally in a gated InGaAs/InP quantum well structure by means of simultaneous measurements of the weak antilocalization (WAL) effect and beating…

介观与纳米尺度物理 · 物理学 2009-11-11 S. A. Studenikin , P. T. Coleridge , G. Yu , P. J. Poole

The spin-orbit splitting of the electron levels in a two-dimensional quantum dot in a perpendicular magnetic field is studied. It is shown that at the point of an accidental degeneracy of the two lowest levels above the ground state the…

介观与纳米尺度物理 · 物理学 2007-05-23 Denis V. Bulaev , Daniel Loss

We consider the problem of spin relaxation in a two-dimensional electron gas (2DEG) in a perpendicular magnetic field. We assume that the spin relaxation is induced by the Rashba spin-orbit (SO) interaction, which appears due to the…

介观与纳米尺度物理 · 物理学 2009-11-10 A. A. Burkov , Leon Balents

We analytically evaluate charge and spin density response functions of the clean two-dimensional electron gas with Rashba spin-orbit coupling at finite momenta and frequencies. On the basis of our exact expressions we discuss the accuracy…

介观与纳米尺度物理 · 物理学 2009-11-13 M. Pletyukhov , S. Konschuh

Explicit dependencies of the local density of states and the magnetization local density of states have been obtained around magnetic point defects in a two-dimensional electron gas with Rashba spin-orbit interaction . The expressions are…

介观与纳米尺度物理 · 物理学 2016-01-14 N. V. Khotkevych , Yu. A. Kolesnichenko , J. M. van Ruitenbeek

We investigate theoretically the combined effects of the electron-electron and the Rashba spin-orbit interactions on two electrons confined in quasi-one-dimensional AlInSb-based double quantum dots. We calculate the two-electron wave…

介观与纳米尺度物理 · 物理学 2015-05-13 C. L. Romano , P. I. Tamborenea , S. E. Ulloa

We study the electrical transport properties of a two-dimensional electron gas with the Rashba spin-orbit interaction in presence of a constant perpendicular magnetic field $(B_0 \hat z)$ which is weakly modulated by ${\bf B_1} = B_1 \cos…

介观与纳米尺度物理 · 物理学 2015-03-19 SK Firoz Islam , Tarun Kanti Ghosh
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