Phase Diagram of Electron Systems near the Superconductor-Insulator Transition

V. L. Pokrovsky, G. M. Falco, and T. Nattermann
Phys. Rev. Lett. 105, 267001 – Published 20 December 2010

Abstract

The zero temperature phase diagram of Cooper pairs exposed to disorder and a magnetic field is determined theoretically from a variational approach. Four distinct phases are found: a Bose and a Fermi insulating, a metallic, and a superconducting phase, respectively. The results explain the giant negative magnetoresistance found experimentally in In-O, TiN, Be and high-Tc materials.

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  • Received 16 February 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.267001

© 2010 The American Physical Society

Authors & Affiliations

V. L. Pokrovsky1,2, G. M. Falco3, and T. Nattermann3

  • 1Department of Physics, Texas A&M University, College Station, Texas 77843-4242, USA
  • 2Landau Institute for Theoretical Physics, Chernogolovka, Moscow District, 142432, Russia
  • 3Institut für Theoretische Physik, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany

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Issue

Vol. 105, Iss. 26 — 31 December 2010

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