Non-resonant microwave absorption evidence for intrinsic Josephson coupling in Tl2Ba2CaCu2O8 single crystals

被引:2
|
作者
Joshi, JP [1 ]
Anand, A
Bhat, SV
Chowdhury, P
Bhatia, SN
机构
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
[2] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India
来源
PHYSICA C | 2000年 / 341卷 / 341-348期
关键词
D O I
10.1016/S0921-4534(00)01133-3
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report the results of our non-resonant microwave absorption (NRMA) studies on single crystals of Tl2Ba2CaCu2O8 (Tl 2212) which reflect the occurrence of intrinsic Josephson coupling in these crystals. We have studied the magnetic field induced microwave absorption at various temperatures from 4.2K to T-c (similar to 104K) using a standard CW EPR spectrometer (H-dc parallel to c). We observe the appearance of a characteristic feature in the NRMA signals similar to the ones observed earlier by us in Bi2Sr2CaCu2O8 (Bi 2212) starting a few degrees below T-c, which on cooling passes through a maximum in intensity before disappearing at a further low temperature. This behaviour is attributed to the appearance, strengthening and disappearance of Josephson response consequent to the temperature dependence of the viscosity of the Josephson medium between the CuO2 superconducting sheets.
引用
收藏
页码:1229 / 1230
页数:2
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