MEASUREMENTS OF THE FLUX-FLOW RESISTIVITY IN YBA2CU3O6.95 BY MICROWAVE TECHNIQUES

被引：8
|
作者：
MORGAN, DC
ZHANG, KA
BONN, DA
LIANG, RX
HARDY, WN
KALLIN, C
BERLINSKY, A
机构：
[1] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER,BC V6T 1Z1,CANADA
[2] MCMASTER UNIV,DEPT PHYS & ASTRON,HAMILTON,ON L8S 4M1,CANADA
来源：
PHYSICA C | 1994年 / 235卷
关键词：
D O I：
10.1016/0921-4534(94)92229-2
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Measurements of the microwave surface resistance have been made at 5.4, 27 and 35 GHz on a high quality single crystal of YBa2Cu3O6.95 in magnetic fields up to 8T (applied parallel to the c-axis) and at temperatures from 20K to 100K. The Coffey-Clem[1] expression for the surface impedance of a superconductor in the mixed state is used to extract the free flux flow resistivity, rho(ff). Using the Bardeen-Stephen[2] expression for the flux flow resistivity and a reasonable estimate of H-c2(T), our result is seen to be consistent with a scattering rate inside the vortex cores that decreases approximately linearly below T-c and does not reflect the rapid decrease in the quasiparticle scattering rate observed in zero field microwave measurements[3].
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页码：2015 / 2016
页数：2
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