Tuning the Insulator-Superconductor Transition in Ultrathin Films By Use of the Electric-Field Effect

ORAL

Abstract

A 10 {\AA} thick film of amorphous bismuth has been prepared in an electric-field effect device geometry. Its low temperature electrical properties have been continuously tuned from weakly insulating to fully superconducting by increasing the gate voltage. The systematics of this insulator-superconductor transition will be discussed in the context of a quantum phase transition. This work is supported in part by the National Science Foundation under grant NSF/DMR-0138209.

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Authors

  • Kevin A. Parendo

  • K.H. Sarwa B. Tan

  • Allen M. Goldman

    University of Minnesota School of Physics and Astronomy, University of Minnesota, School of Physics and Astronomy