Vortex Lattice Melting & Dimensionality Cross-Over in Bi2Sr2CaCu2O8+x Crystals

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Abstract
We report experimental studies of transport properties of superconducting Bi2Sr2CaCu2O8+δ (Bi-2212) bicrystals with various degrees of high quality [001] twist grain boundaries. We find similar resistive onset temperature and field for both the grain-boundary and the constituent single crystals. Critical current across the grain boundaries is essentially independent of twist angle. These results show that the strength of superconducting coupling along the c-axis of [001] twist grain boundaries does no depend on misorientation angle.
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Author(s)
Russell, Graeme
Gu, Genda
Zhao, Yong
Han, Shaowei
Koshizuka, N
He, Ying
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Publication Year
1997
Resource Type
Journal Article
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UNSW Faculty