MODIFIED AMBEGAOKAR–HALPERIN MODEL AND DISSIPATION IN THE POLYCRYSTALLINE Ba2YCu3O7-δ SUPERCONDUCTOR
2004 ◽
Vol 18
(02n03)
◽
pp. 99-103
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Keyword(s):
The magnetoresistance curves of polycrystalline Ba 2 YCu 3 O 7-δ samples for H=0, 1050 and 4880 G are analyzed using the modified Ambegaokar–Halperin model. The analysis shows the occurrence of a crossover in the R–T curves at a field dependent temperature T BP , revealing that the dissipation in Ba 2 YCu 3 O 7-δ samples is possibly caused by two different mechanisms: vortex-dynamics in the low temperature region (below T BP ) and the order parameter fluctuations in the high temperature region (above T BP ).
2009 ◽
Vol 54
(1)
◽
pp. 1-5
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2007 ◽
Vol 567-568
◽
pp. 113-116
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2014 ◽
Vol 670-671
◽
pp. 423-427
2011 ◽
Vol 131
(6)
◽
pp. 1150-1157
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Keyword(s):
1965 ◽
Vol 112
(4)
◽
pp. 818
◽
1976 ◽
Vol 15
(9)
◽
pp. 1813-1814
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Keyword(s):
Keyword(s):