Josephson vortex flow in superconducting single-crystal Bi2Sr2CaCu2Ox
- 4 September 1995
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 67 (10) , 1471-1473
- https://doi.org/10.1063/1.114498
Abstract
Using various size rectangular mesas formed by photolithographically patterning and etching on single‐crystal Bi2Sr2Ca1Cu2Ox superconductors, we have obtained c‐axis volt‐ampere characteristics as a function of magnetic field applied parallel to the a‐b planes. Enhanced sensitivity with field perpendicular to the long side was observed even in mesas with dimensions smaller than the magnetic penetration depth λc. This can be explained in terms of viscous flow of Josephson vortices. The measurements are in good quantitative agreement with theoretical models for Josephson vortex motion in layered superconductors. Vortex flow coexists with the multiple hysteretic structure previously presented as evidence that this material behaves as a stack of underdamped intrinsic Josephson junctions.Keywords
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