Anisotropy of the vortex structure and resistivity in the basal plane of YBa2Cu4O8 single crystals

被引：0
|
作者：
L. Ya Vinnikov
D. É. Boĭnagrov
V. N. Zverev
I. S. Veshchunov
J. Karpinski
机构：
[1] Russian Academy of Sciences,Institute of Solid State Physics
[2] ETH Zurich,Laboratory for Solid State Physics
来源：
Journal of Experimental and Theoretical Physics | 2009年 / 109卷
关键词：
71.18.+y; 74.25.Qt; 74.72.Bk;
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摘要：
The vortex lattice of the YBa2Cu4O8 high-temperature superconductor is studied in the basal plane of monocrystalline samples using the decoration technique in a field interval of 40–600 Oe. Vortex lattice anisotropy (field-independent “compression” of a regular hexagonal vortex cell in the poorly conducting direction by a factor of about 1.3) is detected. Resistivity anisotropy ρa/ρb measured at temperatures from Tc to room temperature is 16–9. Possible reasons for the discrepancy between our results and the available data are discussed.
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页码：280 / 285
页数：5
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