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Peer-reviewed Journal Articles, etc >
Charge density wave soliton liquid
| Title: | Charge density wave soliton liquid |
| Authors: | Matsuura, T. Browse this author | | Hara, J. Browse this author | | Inagaki, K. Browse this author | | Tsubota, M. Browse this author | | Hosokawa, T. Browse this author | | Tanda, S. Browse this author |
| Issue Date: | 2-Feb-2015 |
| Publisher: | IOP Publishing |
| Journal Title: | EPL (Europhysics Letters) |
| Volume: | 109 |
| Issue: | 2 |
| Start Page: | 27005 |
| Publisher DOI: | 10.1209/0295-5075/109/27005 |
| Abstract: | We investigate the charge density wave transport in a quasi–one-dimensional conductor, orthorhombic tantalum trisulfide (o-TaS3), by applying a radio-frequency ac voltage. We find a new ac-dc interference spectrum in the differential conductance, which appears on both sides of the zero-bias peak. The frequency and amplitude dependences of the new spectrum do not correspond to those of any usual ac-dc interference spectrum (Shapiro steps). The results suggest that CDW phase dynamics has a hidden degree of freedom. We propose a model in which phase solitons behave as liquid. The origin of the new spectrum is that the solitons are depinned from impurity potentials assisted by an ac field when a small dc field is applied. Our results provide a new insight as regards our understanding of an elementary process in CDW dynamics. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/60619 |
| 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)
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Submitter: 松浦 徹
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