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Detection of vortex motion in high-Tc superconductor by N-S point contact

✍ Scribed by A.V. Bezryadin; V.N. Kopylov

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 611 KB
Volume: 209
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(93)90575-b

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✦ Synopsis

A N-S point contact (platinum tip-a&plane of a BiZSr2CaCu208 single crystal) has been used for the first time to detect the vortex motion in a high-T, superconductor.

The sweep of an external magnetic field led to the appearance of voltage pulses on the contact (when a constant current was passed through the contact), which were associated with the passage of individual vortices throuab the contact. An abrupt decrease of the oulse amolitude with increasing temperature has also been observed. This fact may be explained by thermal fluctuations of the vortex lattice.

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