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Weak localization, Aharonov-Bohm oscillations and decoherence in arrays of quantum dots | | Dmitri S. Golubev
; Andrew G. Semenov
; Andrei D. Zaikin
; | | Date: |
19 Nov 2010 | | Abstract: | Combining scattering matrix theory with non-linear $sigma$-model and Keldysh
technique we develop a unified theoretical approach enabling one to
non-perturbatively study the effect of electron-electron interactions on weak
localization and Aharonov-Bohm oscillations in arbitrary arrays of quantum
dots. Our model embraces (i) weakly disordered conductors (ii) strongly
disordered conductors and (iii) metallic quantum dots. In all these cases at $T
o 0$ the electron decoherence time is found to saturate to a finite value
determined by the universal formula which agrees quantitatively with numerous
experimental results. Our analysis provides overwhelming evidence in favor of
electron-electron interactions as a universal mechanism for zero temperature
electron decoherence in disordered conductors. | | Source: | arXiv, 1011.4409 | | Services: | Forum | Review | PDF | Favorites | |
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