Type-1.5 Superconducting State from an Intrinsic Proximity Effect in Two-Band Superconductors

Egor Babaev, Johan Carlström, and Martin Speight
Phys. Rev. Lett. 105, 067003 – Published 5 August 2010

Abstract

We show that in multiband superconductors, even an extremely small interband proximity effect can lead to a qualitative change in the interaction potential between superconducting vortices by producing long-range intervortex attraction. This type of vortex interaction results in an unusual response to low magnetic fields leading to phase separation into domains of two-component Meissner states and vortex droplets.

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  • Received 12 October 2009

DOI:https://doi.org/10.1103/PhysRevLett.105.067003

© 2010 The American Physical Society

Authors & Affiliations

Egor Babaev1,2, Johan Carlström1, and Martin Speight3

  • 1Department of Theoretical Physics, The Royal Institute of Technology, Stockholm, SE-10691 Sweden
  • 2Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA
  • 3School of Mathematics, University of Leeds, Leeds LS2 9JT, United Kingdom

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Issue

Vol. 105, Iss. 6 — 6 August 2010

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