Spin orientation and spin precession in inversion-asymmetric quasi-two-dimensional electron systems

2003/05/14 by R. Winkler · 8 citations
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.69.045317

published as Phys. Rev. B 69, 045317 (2004) · 10 pages, 6 figures

arxiv created 2003/05/14 · openalex publication_date 2004/01/28 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Inversion-asymmetry-induced spin splitting of the electron states in quasi-two-dimensional (quasi-2D) systems can be attributed to an effective magnetic field \mathscB which varies in magnitude and orientation as a function of the in-plane wave vector k_\ensuremath\Vert. Using a realistic 8\ifmmode×\else\texttimes\fi8 Kane model that fully takes into account spin splitting because of both bulk inversion asymmetry and structure inversion asymmetry we investigate the spin orientation and the effective field \mathscB for different configurations of a quasi-2D electron system. It is shown that these quantities depend sensitively on the crystallographic direction in which the quasi-2D system was grown as well as on the magnitude and orientation of the in-plane wave vector k_\ensuremath\Vert. These results are used to discuss how spin-polarized electrons can precess in the field \mathscB(k_\ensuremath\Vert). As a specific example we consider Ga_0.47In_0.53As\ensuremath-InP quantum wells.

Citations

• Modern Quantum Mechanics
• Oscillatory effects and the magnetic susceptibility of carriers in inversion layers
• Spin-Orbit Coupling Effects in Zinc Blende Structures

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