Fluctuation of vortices and fluxon transition in Bi2Sr2CaCu2O8+y single crystals

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Abstract
An anomalously broad foot structure is observed in the zero-field resistive transition for the ab plane of Bi2Sr2CaCu2O8+y single crystals, which are found to have a high density of dislocations. However, this anomalous behavior is not apparent for resistive measurements along the c axis. The foot structure can be treated as a superposition of a long resistance tail and a dissipation peak, in which the long resistance tail obeys the theory of KT scaling behavior of resistivity. The dissipation peak is related to the fluxon transition in Josephson-coupled layered superconductors as detailed by Horovitz [Phys. Rev. Lett. 72, 1569 (1994)].
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Zhao, Yong
Gu, Genda
Cochrane, J
Russell, Richard
Wen, J
Nakamura, N
Tajima, S
Koshizuka, N
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Publication Year
1995
Resource Type
Journal Article
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UNSW Faculty