Magnetoconductance oscillations in metallic rings and decoherence due to electron-electron interaction

Details Magnetoconductance oscillations in metallic rings and decoherence due to electron-electron interaction Magnetoconductance oscillations in metallic rings and decoherence due to electron-electron interaction

2007-04-05

arxiv.org/abs/0704.0742v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, LaTeX, 2 eps figures, proceedings of the 6th rencontres du Vietnam "Nanophysics: from fundamentals to applications",

Scientific paper

We study weak localization in chains of metallic rings. We show than nonlocality of quantum transport can drastically affect the behaviour of the harmonics of magnetoconductance oscillations. Two different geometries are considered: the case of rings separated by long wires compared to the phase coherence length and the case of contacted rings. In a second part we discuss the role of decoherence due to electron-electron interaction in these two geometries.

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