POSSIBLE STRESS-INDUCED PHASE-TRANSITION IN O-TAS3

Authors
DAS, KCHUNG, MSKOVE, MJTESSEMA, GX
Issue Date
1995-09-15
Publisher
AMERICAN PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v.52, no.11, pp.7915 - 7919
Abstract
We have measured the stress-strain (sigma-epsilon) relations in o-TaS3 below the charge-density-wave (CDW) transition temperature. We find a large peak in d epsilon/d sigma at a critical stress sigma(c) approximate to 0.7 GPa below 200 K. The anomaly in d epsilon/d sigma, as large as 50% and perhaps associated with a change in length, is sample and temperature dependent. We show that this anomaly is associated with previously seen anomalies in the elastic and transport properties of TaS3, and propose that there is a weakly first-order phase transition from one CDW phase to a different CDW phase at sigma(c).
Keywords
CHARGE-DENSITY-WAVE; ELASTIC ANOMALIES; ORTHORHOMBIC TAS3; PEIERLS TRANSITION; UNIAXIAL-STRAIN; YOUNG MODULUS; SHEAR-MODULUS; DEPENDENCE; CONDUCTIVITY; TEMPERATURE; CHARGE-DENSITY-WAVE; ELASTIC ANOMALIES; ORTHORHOMBIC TAS3; PEIERLS TRANSITION; UNIAXIAL-STRAIN; YOUNG MODULUS; SHEAR-MODULUS; DEPENDENCE; CONDUCTIVITY; TEMPERATURE
ISSN
0163-1829
URI
https://pubs.kist.re.kr/handle/201004/144988
DOI
10.1103/PhysRevB.52.7915
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