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We have carried out a systematic analysis of the transverse dipole spin response of a large size quantum dot within time-dependent current density functional theory. Results for magnetic fields corresponding to integer filling factors are…

凝聚态物理 · 物理学 2009-10-31 E. Lipparini , M. Barranco , A. Emperador , M. Pi , Ll. Serra

Spin-orbit interaction (SOI) leads to spin precession about a momentum-dependent spin-orbit field. In a diffusive two-dimensional (2D) electron gas, the spin orientation at a given spatial position depends on which trajectory the electron…

介观与纳米尺度物理 · 物理学 2016-02-18 P. Altmann , M. Kohda , C. Reichl , W. Wegscheider , G. Salis

We develop a microscopic theory of spin relaxation of a two-dimensional electron gas in quantum wells with anisotropic electron scattering. Both precessional and collision-dominated regimes of spin dynamics are studied. It is shown that, in…

介观与纳米尺度物理 · 物理学 2015-05-30 A. V. Poshakinskiy , S. A. Tarasenko

The effective electron-electron interaction in the electron gas depends on both the density and spin local field factors. Variational Diagrammatic Quantum Monte Carlo calculations of the spin local field factor are reported and used to…

量子气体 · 物理学 2021-01-27 Carl A. Kukkonen , Kun Chen

We provide a theoretical framework for the electric field control of the electron spin in systems with diffusive electron motion. The approach is valid in the experimentally important case where both intrinsic and extrinsic spin-orbit…

介观与纳米尺度物理 · 物理学 2009-09-10 R. Raimondi , P. Schwab

By applying a position-dependent detuning to a spin-orbit-coupled Hamiltonian with equal Rashba and Dresselhaus coupling, we exploit the behavior of the angular momentum of a harmonically trapped Bose-Einstein condensed atomic gas and…

量子气体 · 物理学 2018-05-07 Chunlei Qu , Sandro Stringari

Using an S-matrix formulation we evaluate the conductance of a one dimensional free electron gas in double exchange interaction with a classical conical magnet. We find integer conductance steps depending on the energy window of the…

介观与纳米尺度物理 · 物理学 2026-01-21 X. Zotos

Spin relaxation can be greatly enhanced in narrow channels of two-dimensional electron gas due to ballistic spin resonance, which is mediated by spin-orbit interaction for trajectories that bounce rapidly between channel walls. The channel…

介观与纳米尺度物理 · 物理学 2010-09-30 W. W. Yu , S. M. Frolov , S. Luescher , J. A. Folk , W. Wegscheider

We calculate orbital spin-dependent magnetization in a two-dimensional electron gas with spin-orbit interaction of Rashba type. Such an orbital magnetization is admitted by the time-reversal symmetry of the system, and gives rise to spin…

介观与纳米尺度物理 · 物理学 2016-11-09 A. Dyrdał , V. K. Dugaev , J. Barnaś

The recent rise of material platforms combining magnetism and two-dimensionality of mobile carriers reveals a diverse spectrum of spin-orbit phenomena and stimulates its ongoing theoretical discussions. In this work we use the density…

介观与纳米尺度物理 · 物理学 2022-02-02 K. S. Denisov

We study the spin dynamics in a high-mobility two-dimensional electron gas confined in a GaAs/AlGaAs quantum well. An unusual magnetic field dependence of the spin relaxation is found: as the magnetic field becomes stronger, the spin…

介观与纳米尺度物理 · 物理学 2020-06-09 V. V. Belykh , M. V. Kochiev , D. N. Sob'yanin , D. R. Yakovlev , M. Bayer

We have studied direct and Raman processes of the decay of electron spin states in a quantum dot via radiation of phonons corresponding to elastic twists. Universal dependence of the spin relaxation rate on the strength and direction of the…

其他凝聚态物理 · 物理学 2009-11-11 C. Calero , E. M. Chudnovsky , D. A. Garanin

We investigate the electric manipulation of a single electron spin in a single gate-defined quantum dot. We observe that so-far neglected differences between the hyperfine and spin-orbit mediated electric dipole spin resonance conditions…

量子物理 · 物理学 2013-06-27 M. Shafiei , K. C. Nowack , C. Reichl , W. Wegscheider , L. M. K. Vandersypen

Starting from the non-relativistic Pauli description of spin-1/2 particles, a set of fluid equations, governing the dynamics of such particles interacting with external fields and other particles, is derived. The equations describe…

等离子体物理 · 物理学 2008-11-26 G. Brodin , M. Marklund

An explicit form of the magnetic moment tensor operator for non-Dirac particles with rest spin 1/2 and its essential difference from the spin operator are established. Possible consequences of the last fact for the description of the spin…

高能物理 - 唯象学 · 物理学 2013-04-12 L. M. Slad

An AC electric field applied to a donor-bound electron in a semiconductor modulates the orbital character of its wave function, which affects the electron's spin dynamics via the spin-orbit interaction. Numerical calculations of the spin…

介观与纳米尺度物理 · 物理学 2013-03-05 A. De , Craig E. Pryor , Michael E. Flatté

We investigate the magnetoelectric (or inverse spin-galvanic) effect in the two dimensional electron gases with both Rashba and Dresselhaus spin-orbit coupling using an exact solution of the Boltzmann equation for electron spin and…

介观与纳米尺度物理 · 物理学 2007-05-23 Maxim Trushin , John Schliemann

It is widely admitted that the helical conformation of certain chiral molecules may induce a sizable spin selectivity observed in experiments. Spin selectivity arises as a result of the interplay between a helicity-induced spin-orbit…

介观与纳米尺度物理 · 物理学 2018-05-23 E. Diaz , P. Albares , P. G. Estevez , J. M. Cervero , C. Gaul , E. Diez , F. Dominguez-Adame

We derive the spin-wave dynamics of a magnetic material from the time-dependent spin density functional theory in the linear response regime. The equation of motion for the magnetization includes, besides the static spin stiffness, a "Berry…

材料科学 · 物理学 2009-11-07 Zhixin Qian , Giovanni Vignale

The influence of the intrinsic spin of electrons on the propagation of circularly polarized waves in a magnetized plasma is considered. New eigenmodes are identified, one of which propagates below the electron cyclotron frequency, one above…

等离子体物理 · 物理学 2015-05-19 A. P. Misra , G. Brodin , M. Marklund , P. K. Shukla