"Giant" Aharonov-Bohm effect in mesoscopic silver rings with bismuth electrodes

V. T. Petrashov, V. N. Antonov, R. Sh Shaikhaidarov, S. V. Maksimov, P. Meeson, R. Souhami, M. Springford

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Aharonov-Bohm resistance oscillations of mesoscopic silver rings are found to be enhanced ∼ 100 times when contact to the ring is made with bismuth rather than silver or gold electrodes. An argument based on the idea that a mismatch of the Fermi surfaces at the interfaces leads to a reduced effective electrode size is shown to be inadequate, as the resistance oscillations exceed the maximum theoretical value of Altshuler, Aronov and Spivak (1991) by an order of magnitude.

Original languageEnglish
Pages (from-to)593-598
Number of pages6
JournalEurophysics Letters
Volume34
Issue number8
DOIs
Publication statusPublished - 10 Jun 1996
Externally publishedYes

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