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Open AccessArticle

Instabilities of the Vortex Lattice and the Peak Effect in Single Crystal YBa2Cu4O8

Department of Physics, American University of Sharjah, P.O. Box 26666 Sharjah, UAE
Department of Physics, University of Alberta, Edmonton, AB T6G 2R3, Canada
Solid State Physics Laboratory, ETH, CH-8093 Zurich, Switzerland
Author to whom correspondence should be addressed.
Condens. Matter 2019, 4(3), 74;
Received: 18 June 2019 / Revised: 25 July 2019 / Accepted: 30 July 2019 / Published: 2 August 2019
(This article belongs to the Special Issue Layered Superconductors II)
We report on the measurements of the remnant magnetization, and hence critical current, in a single crystal of YBa2Cu4O8. A peak in the temperature dependence of the critical current is observed when the external magnetic field is tilted away from the a–b planes. The observed behavior is attributed to a thermally activated instability-driven vortex-lattice splitting or vortex chain formation. The nature of the peak and the possibility of a thermally-activated dimensional crossover have been discussed. View Full-Text
Keywords: remnant magnetization; vortex-lattice; peak effect remnant magnetization; vortex-lattice; peak effect
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MDPI and ACS Style

Egilmez, M.; Isaac, I.; Alnaser, A.S.; Bukowski, Z.; Karpinski, J.; Chow, K.H.; Jung, J. Instabilities of the Vortex Lattice and the Peak Effect in Single Crystal YBa2Cu4O8. Condens. Matter 2019, 4, 74.

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