Competition between Zero Bias Anomaly and Proximity Effect in Disordered Systems

Yuval Oreg, P. W. Brouwer, B. D. Simons, and Alexander Altland
Phys. Rev. Lett. 82, 1269 – Published 8 February 1999
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Abstract

We investigate the suppression of the proximity effect in mesoscopic normal-metal–superconductor systems induced by Coulomb interaction. We identify and elucidate the mechanism by which disorder leads to an amplification of this effect. In particular, for strong enough disorder, the proximity effect is shown to vanish. An expression for the tunneling density of states is obtained and experimental applications are discussed.

  • Received 14 September 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.1269

©1999 American Physical Society

Authors & Affiliations

Yuval Oreg1, P. W. Brouwer1, B. D. Simons2, and Alexander Altland3

  • 1Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138
  • 2Cavendish Laboratory, Madingley Road, Cambridge, CB3 0HE, United Kingdom
  • 3Theoretische Physik III, Ruhr-Universität Bochum, 44780 Bochum, Germany

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Vol. 82, Iss. 6 — 8 February 1999

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