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Hanle effect driven by weak-localization | | I.S. Lyubinskiy
; V.Yu. Kachorovskii
; | | Date: |
19 Nov 2004 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Disordered Systems and Neural Networks | cond-mat.mes-hall cond-mat.dis-nn | | Abstract: | The influence of weak localization on Hanle effect in a two-dimensional system with spin-split spectrum is considered. We show that weak localization drastically changes the dependence of stationary spin polarization $mathbf S$ on external magnetic field $B.$ In particular, the non-analytic dependence of $mathbf S$ on $mathbf B$ is predicted for III-V-based quantum wells grown in [110] direction and for [100]-grown quantum wells having equal strengths of Dresselhaus and Bychkov-Rashba spin-orbit coupling. It is shown that in weakly localized regime the components of $mathbf S$ are discontinuous at $B=0.$ At low $B,$ the magnetic field-induced rotation of the stationary polarization is determined by quantum interference effects. This implies that the Hanle effect in such systems is totally driven by weak localization. | | Source: | arXiv, cond-mat/0411501 | | Services: | Forum | Review | PDF | Favorites | |
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