2009/06/29 by Masakatsu Tsubota, Katsuhiko Inagaki, Satoshi Tanda +1 · 3 citations
Materials Science · Physics and Astronomy · #Mechanical and Optical Resonators #Organic and Molecular Conductors Research #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1209/0295-5075/97/57011
published as EPL 97, (2012) 57011 · 11 pages, 4 figures
arxiv created 2009/06/29 · openalex publication_date 2012/03/01 · arxiv updated 2012/03/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We report evidence for Aharonov-Bohm (AB) oscillations with temporal current switching at 5.1 and 79 K by using charge-density wave (CDW) loops in TaS 3 ring crystals. The periodicity of the AB oscillations is h /2 e , and this is confirmed by employing four samples with different diameters. This means that sliding CDWs carry 2 e charge quanta. We observe current switching between the two states, namely the high and low current 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 /2 e . We discover that the observed oscillations, which are a superposition of the current fluctuations and the switching behavior, have a period h /2 e .