Magnetic-field-tuned superconductor-insulator transition in two-dimensional films

A. F. Hebard and M. A. Paalanen
Phys. Rev. Lett. 65, 927 – Published 13 August 1990
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Abstract

A magnetic field is used to tune through a new superconducting-insulating transition of amorphous-composite indium oxide films at various stages of disorder. The results are in accord with scaling theory which identifies a universal sheet resistance separating a superconducting phase of localized vortices and Bose-condensed electron pairs from an insulating phase of Bose-condensed vortices and localized electron pairs. A unity dynamical exponent is confirmed and scaling behavior of the resistance over a wide range of temperatures and magnetic fields is found.

  • Received 26 February 1990

DOI:https://doi.org/10.1103/PhysRevLett.65.927

©1990 American Physical Society

Authors & Affiliations

A. F. Hebard and M. A. Paalanen

  • AT&T Bell Laboratories, Murray Hill, New Jersey 07974

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Issue

Vol. 65, Iss. 7 — 13 August 1990

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