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We present the analytical result of the expectation value of spin resulting from an injected spin polarized electron into a semi-infinitely extended 2DEG plane with [001] growth geometry via ideal quantum point contact. Both the Rashba and…

Other Condensed Matter · Physics 2007-05-23 Ming-Hao Liu , Ching-Ray Chang , Son-Hsien Chen

We apply an invariant-based inverse engineering method to control by time-dependent electric fields electron spin dynamics in a quantum dot with spin-orbit coupling in a weak magnetic field. The designed electric fields provide a shortcut…

Quantum Physics · Physics 2012-11-16 Yue Ban , Xi Chen , E. Ya Sherman , J. G. Muga

A method is presented to calculate the spin relaxation times T1, T2 due to a non-uniform magnetic field, and the linear-in-electric-field precession frequency shift {\delta}{\omega}E when an electric field is present, in the diffusion…

Atomic Physics · Physics 2015-05-20 Steven M. Clayton

The spin of an electron trapped in a quantum dot is a promising candidate implementation of a qubit for quantum information processing. We study the central spin problem of the effect of the hyperfine interaction between such an electron…

Mesoscale and Nanoscale Physics · Physics 2007-08-29 Gang Chen , Doron L. Bergman , Leon Balents

Due to the spin-orbital coupling in a semiconductor quantum dot, a freely precessing electron spin produces a time-dependent charge density. This creates a sizeable electric field outside the dot, leading to promising applications in…

Mesoscale and Nanoscale Physics · Physics 2008-04-12 L. S. Levitov , E. I. Rashba

We discuss the quantum and classical dynamics of a particle with spin in the gravitational field of a rotating source. A relativistic equation describing the motion of classical spin in curved spacetimes is obtained. We demonstrate that the…

General Relativity and Quantum Cosmology · Physics 2009-11-06 Yuri N. Obukhov , Alexander J. Silenko , Oleg V. Teryaev

Electrical control and detection of spin precession are experimentally demonstrated by using spin-resolved edge states in the integer quantum Hall regime. Spin precession is triggered at a corner of a biased metal gate, where electron…

Mesoscale and Nanoscale Physics · Physics 2012-08-03 T. Nakajima , Kuan-Ting Lin , S. Komiyama

Using the recently reported mode locking effect we demonstrate a highly robust control of electron spin coherence in an ensemble of (In,Ga)As quantum dots during the single spin coherence time. The spin precession in a transverse magnetic…

We offer a possible physical explanation for the origin of the electron spin and the related antisymmetry of the wave function for a two-electron system, in the framework of nonrelativistic quantum mechanics as provided by linear stochastic…

Quantum Physics · Physics 2018-01-03 Ana María Cetto , Luis de la Peña , Andrea Valdés-Hernández

We have studied theoretically the electron spin relaxation in semiconductor quantum dots via interaction with nuclear spins. The relaxation is shown to be determined by three processes: (i) -- the precession of the electron spin in the…

Condensed Matter · Physics 2009-11-07 I. A. Merkulov , Al. L. Efros , M. Rosen

We propose adiabatic pumping of orbital magnetization driven by coherent spin precession, facilitating the rectification of this precession. The orbital magnetization originates from the adiabatic evolution of valence electrons with a…

Materials Science · Physics 2025-08-20 Yafei Ren , Wenqin Chen , Chong Wang , Ting Cao , Di Xiao

Non-adiabatic correction to spin transfer torque arising from fast-varying spin texture is calculated treating conduction electron fully quantum mechanically. The torque is non-local in space, and is shown to equivalent to a force (due to…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Gen Tatara , Hiroshi Kohno , Junya Shibata , Yann Lemaho , Kyung-Jin Lee

We investigate the Drude model of spin dynamics in two-dimensional spin-orbit coupled systems. In the absence of an applied electric field, the spin aligns with the k-dependent effective magnetic field. The influence of disorder (the…

Mesoscale and Nanoscale Physics · Physics 2020-12-14 Tsung-Wei Chen , Hsiu-Chuan Hsu

We continue the study undertaken in Efroimsky (2005a) where we explored the influence of spin-axis variations of an oblate planet on satellite orbits. Near-equatorial satellites had long been believed to keep up with the oblate primary's…

Astrophysics · Physics 2014-10-13 Michael Efroimsky

We study effects of the shape of a two-dimensional waveguide on the spin-dependent electron transport in the presence of spin-orbit coupling. The transition from classical motion to the tunneling regime can be controlled there by modulating…

Mesoscale and Nanoscale Physics · Physics 2012-02-03 Yue Ban , E. Ya. Sherman

We establish a new covariant phenomenological model, which describes an influence of pseudoscalar (axion) field on spins of test massive particles. The model includes general relativistic equations of particle motion and spin evolution in…

General Relativity and Quantum Cosmology · Physics 2015-11-23 Alexander B. Balakin , Vladimir A. Popov

We consider a motion of a weakly relativistic charged particle with an arbitrary spin in central potential $e/r$ in terms of classical mechanics. We show that the spin-orbital interaction causes the precession of the plane of orbit around…

Quantum Physics · Physics 2023-05-11 Dmitry S. Kaparulin , Nikita A. Sinelnikov

This article reviews the current status of spin dynamics in semiconductors which has achieved a lot of progress in the past years due to the fast growing field of semiconductor spintronics. The primary focus is the theoretical and…

Materials Science · Physics 2015-03-13 M. W. Wu , J. H. Jiang , M. Q. Weng

It has been found that a model of extended electrons is more suited to describe theoretical simulations and experimental results obtained via scanning tunnelling microscopes, but while the dynamic properties are easily incorporated,…

General Physics · Physics 2017-03-24 Thomas Pope , Werner Hofer

We discuss the influence of electrical effects on spin transport, and in particular the propagation and relaxation of spin polarized electrons in the presence of inhomogeneous electric fields. We show that the spin relaxation length…

Mesoscale and Nanoscale Physics · Physics 2007-10-24 Dan Csontos , Sergio E. Ulloa
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