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Lévy flights in quantum transport in quasiballistic wires

Research output: Contribution to journalJournal article

Published

Journal publication date10/08/1998
JournalPhysical Review Letters
Journal number6
Volume81
Number of pages4
Pages1274-1277
Original languageEnglish

Abstract

Conductance fluctuations, localization, and statistics of Lyapunov exponents are studied numerically in pure metallic wires with rough boundaries (quasiballistic wires). We find that the correlation energy of conductance fluctuations scales anomalously with the sample dimensions, indicating the role of Levy flights. Application of a magnetic field deflects the Levy flights which reduces the localization length. This deflection also breaks geometrical flux cancellation and restores the usual Aharonov-Bohm type magnetoconductance fluctuations.

Bibliographic note

© 1998 The American Physical Society