Bogomolnyi-type bounds in unconventional superconductors without external magnetic fields

Following Bogomolnyi's classical treatment of vortices, we develop a method for finding rigorous lower bounds to the Landau-Ginzburg free energy, describing unconventional superconductors in the absence of external magnetic fields. This allows a more precise description of the magnetic instabil...

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Bibliographic Details
Published in:Solid state communications 1996-09, Vol.99 (11), p.831-834
Main Authors: ACHUCARRO, A, MANES, J. L
Format: Article
Language:English
Subjects:
A. superconductors
Condensed matter: electronic structure, electrical, magnetic, and optical properties
D. phase transitions
Exact sciences and technology
Magnetic properties
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary:Following Bogomolnyi's classical treatment of vortices, we develop a method for finding rigorous lower bounds to the Landau-Ginzburg free energy, describing unconventional superconductors in the absence of external magnetic fields. This allows a more precise description of the magnetic instabilities previously considered in these systems. In particular, we derive new sufficient conditions for the stability of both the homogeneous and inhomogeneous equilibrium states.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(96)00210-4