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Hanle effect driven by weak localization | | I S Lyubinskiy
; V Yu Kachorovskii
; | | Date: |
25 Feb 2005 | | Journal: | Phys Rev Lett, 94 (7), 076406 | | Abstract: | The influence of weak localization on the Hanle effect in a two-dimensional system with a spin-split spectrum is considered. We show that weak localization drastically changes the dependence of a stationary spin polarization S on an external magnetic field B. In particular, the nonanalytic dependence of S on B is predicted for III-V-based quantum wells grown in the [110] direction and for the [100]-grown quantum wells having equal strengths of Dresselhaus and Bychkov-Rashba spin-orbit coupling. It is shown that in a weakly localized regime the components of 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: | PubMed, pmid15783837 | | Services: | Forum | Review | Favorites | |
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