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Aharonov-Bohm effect in charge-density wave loops with inherent temporal current switching

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Title: Aharonov-Bohm effect in charge-density wave loops with inherent temporal current switching
Authors: Tsubota, M. Browse this author
Inagaki, K. Browse this author
Matsuura, T. Browse this author
Tanda, S. Browse this author →KAKEN DB
Issue Date: Mar-2012
Publisher: European Physical Society
Journal Title: EPL (Europhysics Letters)
Volume: 97
Issue: 5
Start Page: 57011
Publisher DOI: 10.1209/0295-5075/97/57011
Abstract: We report evidence for Aharonov-Bohm (AB) oscillations with temporal current switching at 5.1 and 79K by using charge-density wave (CDW) loops in TaS3 ring crystals. The periodicity of the AB oscillations is h/2e, and this is confirmed by employing four samples with different diameters. This means that sliding CDWs carry 2e charge quanta. We observe current switching between the two states, namely the high and low urrent states, as a result of the separation of field-dependent and time-dependent fluctuations. The probability distribution of the switching oscillates also with a period of h/2e. We discover that the bserved oscillations, which are a superposition of the current fluctuations and the switching behavior, have a period h/2e.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 坪田 雅功

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