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Phase diagram of a lattice of vortex molecules in multicomponent superconductors and multilayer cuprate superconductors

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Published 4 June 2008 • IOP Publishing Ltd
, , Citation Y Tanaka et al 2008 Supercond. Sci. Technol. 21 085011 DOI 10.1088/0953-2048/21/8/085011

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1 National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan

2 National Institute of Materials Physics, Bucharest 077125, Romania

3 Department of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT, UK

4 Department of Applied Electronics, Tokyo University of Science, Noda 278-851, Japan

5 Department of Nano-Structures and Advanced Materials, Graduate School of Science and Engineering, Kagoshima University, Korimoto, Kagoshima 890-0065, Japan

Dates

  1. Received 31 March 2008
  2. Published

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0953-2048/21/8/085011

Abstract

The Abrikosov lattice in the multilayer cuprate superconductor CuBa2Ca3Cu3Oy (Cu-1223) has been experimentally and theoretically demonstrated to be composed of vortex molecules. Cu-1223 is considered to be a typical multicomponent superconductor. We show that in such a system the rotational freedom around the axis of the vortex molecular tube generates orientational disorder and the orientational glass (or crystal) phase, which is never present in conventional vortex lattices consisting of axisymmetric vortices. The emergence of the orientational glass phase and orientational order phase with orthorhombic distortion is a general property of vortex molecule lattices of the multiband type of multicomponent superconductors.

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10.1088/0953-2048/21/8/085011