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)
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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 |
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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 |
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