A New Type of Charge-Density-Wave Pinning in Orthorhombic TaS3 Crystals with Quenching Defects

Diminishing in the concentration of quenching defects during thermocycling of orthorhombic TaS 3 samples in the temperature range below the Peierls transition temperature T < T P is observed. It makes it possible to study the character of pinning of the charge density wave by these defects. A num...

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Bibliographic Details
Published in:JETP letters 2019-07, Vol.110 (1), p.62-67
Main Authors: Minakova, V. E., Nikitina, A. M., Zaitsev-Zotov, S. V.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Charge density waves
Condensed Matter
Conductors
Crystal defects
Dislocations
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Pinning
Point defects
Quantum Information Technology
Quenching
Solid State Physics
Spintronics
Strong interactions (field theory)
Thermal cycling
Transition temperature
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Summary:Diminishing in the concentration of quenching defects during thermocycling of orthorhombic TaS 3 samples in the temperature range below the Peierls transition temperature T < T P is observed. It makes it possible to study the character of pinning of the charge density wave by these defects. A number of fundamental differences from pinning by ordinary local pinning centers—impurities and point defects—have been found. We conclude that quenching defects are extended (non-local) objects (presumably, dislocations) that can diffuse from the crystal during low-temperature thermocycling due to their strong interaction with the charge density wave, which is intrinsic for Peierls conductors. The presence of these defects leads to a previously unknown non-local type of the charge-density-wave pinning that acts on T P and the threshold field for the onset of charge-density-wave sliding, E T , differently in comparison with the local pinning centers.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364019130034