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相关论文: Giant Collective Spin-Orbit Field in a Quantum Wel…

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Spin-orbit (SO) fields in a spin-polarized electron gas are studied by angle-resolved inelastic light scattering on a CdMnTe quantum well. We demonstrate a striking organization and enhancement of SO fields acting on the collective spin…

介观与纳米尺度物理 · 物理学 2013-10-30 Florent Baboux , Florent Perez , Carsten A. Ullrich , Irene D'Amico , Grzegorz Karczewski , Tomasz Wojtowicz

In semiconductor heterostructures, bulk and structural inversion asymmetry and spin-orbit coupling induce a k-dependent spin splitting of valence and conduction subbands, which can be viewed as being caused by momentum-dependent crystal…

介观与纳米尺度物理 · 物理学 2009-11-10 C. A. Ullrich , M. E. Flatte

We perform a study of the effect of the high in-plane electric field on the spin precession and spin dephasing due to the D'yakonov-Perel' mechanism in $n$-type GaAs (100) quantum wells by constructing and numerically solving the kinetic…

其他凝聚态物理 · 物理学 2007-05-23 M. Q. Weng , M. W. Wu , L. Jiang

A fully microscopic theory of electron spin relaxation by the D'yakonov-Perel' type spin-orbit coupling is developed for a semiconductor quantum well with a magnetic field applied in the growth direction of the well. We derive the Bloch…

凝聚态物理 · 物理学 2009-11-07 Vadim I. Puller , Lev G. Mourokh , Norman J. M. Horing , Anatoly Yu. Smirnov

In this work, the spin relaxation accompanying the spin diffusion in symmetric Si/SiGe quantum wells without the D'yakonov-Perel' spin-relaxation mechanism is calculated from a fully microscopic approach. The spin relaxation is caused by…

材料科学 · 物理学 2009-02-07 P. Zhang , M. W. Wu

Effect of magnetic field on electron spin relaxation in quantum wells is studied theoretically. We have shown that Larmor effect and cyclotron motion of carriers can either jointly suppress D'yakonov-Perel' spin relaxation or compensate…

介观与纳米尺度物理 · 物理学 2009-11-10 M. M. Glazov

Disorder in spin-orbit (SO) coupling is an important feature of real low-dimensional electron structures. We study spin relaxation due to such a disorder as well as resulting abilities of spin manipulation. The spin relaxation reveals…

介观与纳米尺度物理 · 物理学 2009-09-03 V. K. Dugaev , E. Ya. Sherman , V. I. Ivanov , J. Barnas

We have investigated the effect of spin-orbit (SO) coupling on the emission spectra of a quantum cascade laser. In an externally applied magnetic field parallel to the electron plane, the SO coupling would result in a double-peak structure…

介观与纳米尺度物理 · 物理学 2009-11-11 V. Apalkov , A. Bagga , T. Chakraborty

Multi-subband effect on spin precession and spin dephasing in $n$-type GaAs quantum wells is studied with electron-electron and electron-phonon scattering explicitly included. The effects of temperature, well width and applied electric…

材料科学 · 物理学 2007-05-23 M. Q. Weng , M. W. Wu

We perform a many-body study of the spin dephasing due to the D'yakonov-Perel' effect in n-typed GaAs (100) quantum wells under high magnetic fields in the Voigt configuration by constructing and numerically solving the kinetic Bloch…

凝聚态物理 · 物理学 2015-06-24 M. Q. Weng , M. W. Wu

Electron spins in a semiconductor quantum well couple to an electric field {\it via} spin-orbit interaction. We show that the standard spin-orbit coupling mechanisms can provide extraordinary efficient electron spin manipulation by an…

材料科学 · 物理学 2009-11-10 E. I. Rashba , Al. L. Efros

We describe the simultaneous effects of the spin-orbit (SO) perturbation and a magnetic field $B$ on a disk shaped quantum dot (QD). {As it is known the} combination of electrostatic forces among the $N$ electrons confined in the QD and the…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Bellucci , P. Onorato

We study theoretically the effect of spin-orbit coupling on quantum well excitons in a strong magnetic field. We show that, in the presence of an in-plane field component, the excitonic absorption spectrum develops a double-peak structure…

介观与纳米尺度物理 · 物理学 2014-11-18 O. Olendski , Q. L. Williams , T. V. Shahbazyan

The collective dipole mode is induced and measured in a spin-orbit (SO) coupled degenerate Fermi gas of $^{173}$Yb atoms. Using a differential optical Stark shift, we split the degeneracy of three hyperfine states in the ground manifold,…

量子气体 · 物理学 2018-11-27 Shanchao Zhang , Chengdong He , Elnur Hajiyev , Zejian Ren , Bo Song , Gyu-Boong Jo

We experimentally and theoretically investigate the spin orbit (SO) field in a physically defined, p type metal oxide semiconductor double quantum dot in silicon. We measure the magnetic field dependence of the leakage current through the…

The electron spin dynamics in an optically excited narrow quantum well is studied, where the electron spins precess in a k-dependent magnetic field while the electrons scatter at localized impurities. For the resulting spin decay, which is…

介观与纳米尺度物理 · 物理学 2017-05-31 Michael Cosacchi , Moritz Cygorek , Florian Ungar , Vollrath Martin Axt

We present a theory of collective spin excitations in diluted-magnetic-semiconductor quantum wells in which local magnetic moments are coupled via a quasi-two-dimensional gas of electrons or holes. In the case of a ferromagnetic state with…

介观与纳米尺度物理 · 物理学 2009-11-10 Diego Frustaglia , Jürgen König , Allan H. MacDonald

We study the spin-relaxation time in materials where a large spin-orbit coupling (SOC) is present which breaks the spatial inversion symmetry. Such a spin-orbit coupling is realized in zincblende structures and heterostructures with a…

强关联电子 · 物理学 2017-10-23 Lénárd Szolnoki , Annamária Kiss , Balázs Dóra , Ferenc Simon

Spin-orbit effects on electron-electron interaction are studied theoretically. The corrections to the Coulomb interaction of quantum well electrons induced by the spin-orbit coupling are derived. The developed theory is applied to calculate…

介观与纳米尺度物理 · 物理学 2009-05-08 M. M. Glazov , V. D. Kulakovskii

We demonstrate here that the dipole-allowed optical absorption spectrum of a parabolic quantum dot subjected to an external magnetic field reflects the inter-electron interaction effects when the spin-orbit interaction is also taken into…

介观与纳米尺度物理 · 物理学 2009-11-11 Tapash Chakraborty , Pekka Pietiläinen
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