2024-03-29T09:47:53Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/606192022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139Charge density wave soliton liquidMatsuura, T.Hara, J.Inagaki, K.Tsubota, M.Hosokawa, T.Tanda, S.428We 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.IOP PublishingJournal Articleapplication/pdfhttp://hdl.handle.net/2115/60619https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/60619/1/TaS3_16_EPL.pdf0295-5075EPL (Europhysics Letters)1092270052015-02-02enginfo:doi/10.1209/0295-5075/109/27005author