Thermal expansion of niobium diselenide in the basal plane at low temperatures

The thermal expansion of a high-quality 2H-NbSe 2 single crystal is precisely measured in the basal plane and the temperature range 5.7–50 K. An anomaly of the thermal expansion in the basal plane is detected, and it is found to be caused by a superconducting transition. The change in thermal expans...

Full description

Saved in:
Bibliographic Details
Published in:Journal of experimental and theoretical physics 2014-09, Vol.119 (3), p.542-546
Main Authors: Krynetskii, I. B., Kul’bachinskii, V. A., Golubkov, M. V., Kalyuzhnaya, G. A., Shabanova, N. P., Rodin, V. V., Gabrilkin, S. Yu, Kovalenko, V. I.
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Disorder
Elementary Particles
Order
Particle and Nuclear Physics
Phase Transition in Condensed System
Physics
Physics and Astronomy
Quantum Field Theory
Relativity Theory
Solid State Physics
Superconductors
Thermal properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal expansion of a high-quality 2H-NbSe 2 single crystal is precisely measured in the basal plane and the temperature range 5.7–50 K. An anomaly of the thermal expansion in the basal plane is detected, and it is found to be caused by a superconducting transition. The change in thermal expansion coefficient α ab is used to calculate the pressure derivative of the critical temperature ( dT c / dp ab ) = (19.0 ± 2.0) × 10 −9 K/Pa, and this derivative agrees well with the reported data. An additional anomaly, which indicates a phase transition, is also detected in the pretransition range. The nature of the detected phase transition is discussed.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776114090167