Current-voltage characteristics and vortex dynamics in highly underdoped La2−x Sr x CuO4

Shi, Z., Baity, P.G. and Popović, D. (2016) Current-voltage characteristics and vortex dynamics in highly underdoped La2−x Sr x CuO4. Journal of Superconductivity and Novel Magnetism, 29(3), pp. 651-654. (doi: 10.1007/s10948-015-3301-5)

Full text not currently available from Enlighten.

Abstract

The temperature dependence of the nonlinear current-voltage (I–V) characteristics in highly underdoped La2−x Sr x CuO4 (x = 0.07 and 0.08) thick films has been studied in both zero and perpendicular magnetic fields H. Power-law behavior of V(I) is found for both H = 0 and H ≠ 0. The critical current I c was extracted, and its temperature and magnetic field dependences were studied in detail. The Berezinskii-Kosterlitz-Thouless physics dominates the nonlinear I–V near the superconducting transition at H = 0, and it continues to contribute up to a characteristic temperature T x (H). Nonlinear I–V persists up to an even higher temperature T h (H) due to the depinning of vortices.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Baity, Dr Paul
Authors: Shi, Z., Baity, P.G., and Popović, D.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Journal of Superconductivity and Novel Magnetism
Publisher:Springer
ISSN:1557-1939
ISSN (Online):1557-1947
Published Online:19 December 2015

University Staff: Request a correction | Enlighten Editors: Update this record