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Magnetic Properties of the Charged Anderson-Brinkman-Morel State: Absence of Hc1

Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 60)

Abstract

Magnetic properties of the charged Anderson-Brinkman-Morel (ABM) state are investigated theoretically as a special case of time-reversal-symmetry- breaking (T-symmetry breaking) superconductivity, the possibility of which is discussed in heavy-fermion and high T c superconductors [l]-[6]. In the ABM state there are two sources of current: the one from the supercurrent j s(r) and that from the moment l(r) due to the internal motion of Cooper pairs. In zero external field, the field h m(r) from l(r) is screened almost completely by j s(r), as expected, with l(r) changing gradually towards the surface and j s(r) flowing over the bulk. This means that the system as a whole is a nonsingular vortex. As for the magnetization process, the lattice of nonsingular vortices grows from the infinitesimal external field without H c1, subsequently followed by the first-order transition to the lattice with singular cores. Finally, the transition to the normal state occurs at H c 2 which is enhanced over that of the conventional type-II superconductor due to the field l.

Keywords

External Field Cooper Pair Internal Motion Lower Free Energy Magnetization Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1992

Authors and Affiliations

  • T. Kita
    • 1
  1. 1.Institute for Solid State PhysicsThe University of TokyoRoppongi, Minato-ku, Tokyo 106Japan

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