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Title: Field-induced dielectric response saturation in $$o$$ -TaS3

Journal Article · · Journal of Physics. Condensed Matter
 [1];  [2];  [3];  [3];  [4];  [5]
  1. Tianjin Univ. of Technology, Tianjing (China). School of Materials Science and Engineering; Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics; Tianjin Univ. of Technology, Tianjing (China). Key Lab. of Display Materials and Photoelectric Devices
  2. Tianjin Univ. of Technology, Tianjing (China). School of Materials Science and Engineering; Tianjin Key Lab for Photoelectric Materials and Devices, Tianjin (China)
  3. Tianjin Univ. of Technology, Tianjing (China). School of Materials Science and Engineering
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics; Chinese Academy of Sciences (CAS), Hefei (China). Key Lab. of Materials Physics, Inst. of Solid State Physics
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics

The temperature and electric field dependent conductivity spectra of o-TaS3 sample with 10 μm2 in cross section were measured. Besides the classical electric threshold ET₋Cl, we observed another novel threshold ET₋N at a larger electric field, where an S-shaped I-V relation revealed. The appearance of ET₋N may be due to the establishment of coherence among small charge-density- wave domains. Under a stable field E > ET-N, a sharp dispersion emerged below kHz. At a fixed temperature, the scattering rate of the charged condensate was extremely small and decreased with increasing field. With decreasing temperature, the scattering Fröhlic-mode conductivity would be consistent with the meta-stable state.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation of China
Grant/Contract Number:
SC00112704; 10704054
OSTI ID:
1336217
Report Number(s):
BNL-113240-2016-JA; R&D Project: PM016; KC0201050
Journal Information:
Journal of Physics. Condensed Matter, Vol. 28, Issue 39; ISSN 0953-8984
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (29)

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