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Voltage noise measurement of the vortex mean free path in superconducting granular tin films

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)

We present the results of simultaneous current-voltage and voltage noise measurements on granular tin films in the region of the superconducting transition. Interpretation of the results in terms of a phase-slip shot noise demonstrates that vortex motion is uniform only over some characteristic length. This effective mean free path increases as the temperature is lowered and is probably dominated by vortex-antivortex recombination.

Research Organization:
IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598
OSTI ID:
5036789
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 26:1; ISSN PRBMD
Country of Publication:
United States
Language:
English