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Related papers: Spin-orbit coupling in digital alloyed InGaAs quan…

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Using spin and angle-resolved photoemission spectroscopy we investigate a momentum region in Pb quantum well states on Si(111) where hybridization between Rashba-split bands alters the band structure significantly. Starting from the Rashba…

Materials Science · Physics 2014-03-24 Bartosz Slomski , Gabriel Landolt , Stefan Muff , Fabian Meier , Jürg Osterwalder , J. Hugo Dil

We report tilted-field transport measurements in the quantum-Hall regime in an InAs/In_0.75Ga_0.25As/In_0.75Al_0.25As quantum well. We observe anti-crossings of spin-split Landau levels, which suggest a mixing of spin states at Landau level…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 W. Desrat , F. Giazotto , V. Pellegrini , M. Governale , F. Beltram , F. Capotondi , G. Biasiol , L. Sorba

Electron states are studied for quantum dots in a strained Si quantum well, taking into account both valley and orbital physics. Realistic geometries are considered, including circular and elliptical dot shapes, parallel and perpendicular…

Mesoscale and Nanoscale Physics · Physics 2015-03-13 Mark Friesen , S. N. Coppersmith

We suggest an architecture for quantum computing with spin-pair encoded qubits in silicon. Electron-nuclear spin-pairs are controlled by a dc magnetic field and electrode-switched on and off hyperfine interaction. This digital processing is…

Quantum Physics · Physics 2009-11-07 A. J. Skinner , M. E. Davenport , B. E. Kane

We propose an experimental scheme to study spin-orbit coupling effects in a of two-dimensional (2D) Fermi atomic gas cloud by coupling its internal electronic states (pseudospins) to radiation in a delta configuration. The induced…

Statistical Mechanics · Physics 2009-11-13 Xiong-Jun Liu , Mario F. Borunda , Xin Liu , Jairo Sinova

We measure simultaneously the in-plane electron g-factor and spin relaxation rate in a series of undoped inversion-asymmetric (001)-oriented GaAs/AlGaAs quantum wells by spin-quantum beat spectroscopy. In combination the two quantities…

Mesoscale and Nanoscale Physics · Physics 2011-07-11 P. S. Eldridge , J. Hübner , S. Oertel , R. T. Harley , M. Henini , M. Oestreich

We investigate the effect of spin orbit coupling on proximity induced superconductivity in a normal metal attached to a superconductor. Specifically, we consider a heterostructure where the presence of interfaces gives rise to a Rashba spin…

Superconductivity · Physics 2023-05-30 Vivek Mishra , Yu Li , Fu-Chun Zhang , Stefan Kirchner

We investigate the spin relaxation due to the random Rashba spin-orbit coupling in symmetric GaAs (110) quantum wells from the fully microscopic kinetic spin Bloch equation approach. All relevant scatterings, such as the electron-impurity,…

Mesoscale and Nanoscale Physics · Physics 2010-03-17 Y. Zhou , M. W. Wu

Resonant tunneling through semimetallic ErAs quantum wells embedded in GaAs structures with AlAs barriers was recently found to exhibit an intriguing behavior in magnetic fields which is explained in terms of tunneling selection rules and…

mtrl-th · Physics 2009-10-28 A. G. Petukhov , W. R. L. Lambrecht , B. Segall

We report measurements of the spin susceptibility in dilute two-dimensional electrons confined to a 45$\AA$ wide AlAs quantum well. The electrons in this well occupy an out-of-plane conduction-band valley, rendering a system similar to…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 K. Vakili , Y. P. Shkolnikov , E. Tutuc , E. P. De Poortere , M. Shayegan

We review recent theoretical results for hole spins influenced by spin-orbit coupling and Coulomb interaction in two-dimensional quantum wells as well as the decoherence of single hole spins in quantum dots due to hyperfine interaction with…

Mesoscale and Nanoscale Physics · Physics 2014-05-27 Stefano Chesi , Xiaoya Judy Wang , W. A. Coish

In this review we will discuss the experimental and theoretical progresses in studying spin-orbit coupled degenerate atomic gases during the last two years. We shall first review a series of pioneering experiments in generating synthetic…

Quantum Gases · Physics 2012-02-03 Hui Zhai

Spin dynamics of optically excited electrons confined in asymmetric coupled quantum wells are investigated through time resolved Faraday rotation experiments. The inter-well coupling is shown to depend on applied electric field and barrier…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. Poggio , G. M. Steeves , R. C. Myers , N. P. Stern , A. C. Gossard , D. D. Awschalom

Measuring the magnetoresistance (MR) of ultraclean {\it GaAs} two-dimensional holes in a large $r_s$ range of 20-50, two striking behaviors in relation to the spin-orbit coupling (SOC) emerge in response to strong electron-electron…

Strongly Correlated Electrons · Physics 2017-06-02 Jian Huang , L. N. Pfeiffer , K. W. West

InAs quantum well heterostructures are of considerable interest for mesoscopic device applications such as scanning probe and magnetic recording sensors, which require the channel to be close to the surface. Here we report on…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Masaya Nishioka , Bruce A. Gurney , Ernesto E. Marinero , Francisco Mireles

We map electron spin dynamics from time to space in quantum wires with spatially uniform and oscillating Rashba spin-orbit coupling. The presence of the spin-orbit interaction introduces pseudo-Zeeman couplings of the electron spins to…

Mesoscale and Nanoscale Physics · Physics 2011-11-23 Vanita Srinivasa , Jeremy Levy

We investigate quantum dots with Rashba spin-orbit coupling in the strongly-correlated regime. We show that the presence of the Rashba interaction enhances the Wigner localization in these systems, making it achievable for higher densities…

Strongly Correlated Electrons · Physics 2011-12-07 A. Cavalli , F. Malet , J. C. Cremon , S. M. Reimann

We study the ground-state properties of electrons confined to a quantum wire and subject to a smoothly modulated Rashba spin-orbit coupling. When the period of the modulation becomes commensurate with the band filling, the Rashba coupling…

Mesoscale and Nanoscale Physics · Physics 2009-07-28 G. I. Japaridze , Henrik Johannesson , Alvaro Ferraz

In transition-metal dichalcogenides, electrons in the K-valleys can experience both Ising and Rashba spin-orbit couplings. In this work, we show that the coexistence of Ising and Rashba spin-orbit couplings leads to a special type of valley…

Mesoscale and Nanoscale Physics · Physics 2019-03-04 Benjamin T. Zhou , Katsuhisa Taguchi , Yuki Kawaguchi , Yukio Tanaka , K. T. Law

We derive an effective Hamiltonian which describes the dynamics of electrons in the conduction band of transition metal dichalcogenides (TMDC) in the presence of perpendicular electric and magnetic fields. We discuss in detail both the…

Mesoscale and Nanoscale Physics · Physics 2014-03-18 Andor Kormányos , Viktor Zólyomi , Neil D. Drummond , Guido Burkard
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