Title

Electric-field tuning of the superconductor-insulator transition in granular Al films

Document Type

Article

Publication Date

1-1-1994

Abstract

The superresistive phase of thin granular films near the superconductor-insulator transition is believed to result from the suppression of Josephson tunneling by the large charging energy, Ec, of the grains. Our ac I-V studies of granular Al films suggest that a small dc bias voltage can be used to overcome this Coulomb barrier and to recover Josephson tunneling. This bias, in fact, drives a critically disordered film from the superresistive phase to a quasisuperconducting phase. © 1994 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review B

First Page

13065

Last Page

13068

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