Naslov
Properties of Strained TaS3 Samples in the State of Charge Density Wave and in the Normal State

Autori
Zybtsev, S. G. ; Pokrovskii, V. Ya. ; Zhigalina, O. M. ; Khemelnin, D. N. ; Starešinić, D. ; Šturm, S. ; Tchernychova, E.

Izvornik
Journal of experimental and theoretical physics (1063-7761) 124 (2017), 4; 665-677

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ONE-DIMENSIONAL CONDUCTORS ; ELECTRIC-FIELD ; ELASTIC PROPERTIES ; SHEAR-MODULUS ; PHASE-SLIP ; DEPENDENCE ; TRANSITION ; BRONZES ; O-TAS3 ; NBSE3

Sažetak
The uniaxial strain of quasi-one-dimensional conductor whiskers of orthorhombic TaS3 at a strain higher than epsilon(c) similar to 0.8% leads to a sharp increase in the coherence of the properties of a charge density wave (CDW), which manifests itself in its motion in fields higher than threshold field E-t . During uniaxial elongation, TaS3 is shown to exhibit the following unusual properties even in weak fields: Peierls transition temperature T-P depends nonmonotonically on epsilon, one-dimensional fluctuations weaken near T-P, and the coherence length of a charge density increases at T < T-P . Investigations in fields higher than E-t show that the ultracoherent properties of CDW exist in a wide temperature range and are retained when temperature increases up to T-P . These properties of CDW make it possible to observe a sharp increase in E-t near T-P and an almost jumplike increase in E-t at T < 90 K. The increase in E-t at T-P is explained by a decrease in the coherence volume of CDW because of a fluctuational suppression of the Peierls gap.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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