Ferromagnetic and antiferromagnetic superconductivity

Hampshire, DP

Abstract

The Gibbs free energy of magnetic superconductors has been analysed. The spatial variation and the nonlinear magnetic response of the magnetic ions in-field have been included. Generalised versions of the Ginzburg-Landau equations and one of the London equations have been found. In addition to conventional diamagnetism that occurs in metallic superconductors, an antiferromagnetic and a ferromagnetic superconducting state can occur in magnetic superconductors as the lowest energy state. In the ferromagnetic and the antiferromagnetic superconducting state, the square flux-line-lattice is more stable than the Abrikosov triangular lattice. We conclude that the Meissner state and zero resistance should not be considered fundamental properties of tall) superconductors. (C) 1998 Elsevier Science B.V. All rights reserved.

Citation

Hampshire, D. (1998). Ferromagnetic and antiferromagnetic superconductivity. Physica C: Superconductivity and its Applications, 304(1-2), 1-11. https://doi.org/10.1016/s0921-4534%2898%2900293-7

• Journal Article Type: Article
• Publication Date: 1998-08
• Journal: Physica C: Superconductivity and its Applications
• Print ISSN: 0921-4534
• Electronic ISSN: 1873-2143
• Publisher: Elsevier
• Volume: 304
• Issue: 1-2
• Pages: 1-11
• DOI: https://doi.org/10.1016/s0921-4534%2898%2900293-7
• Keywords: ferromagnetic superconductivity; antiferromagnetic superconductivity;Gibbs free energyFLUX-LINE-LATTICE; ERNI2B2C; COEXISTENCE; COMPETITION; TRANSITION;MAGNETISM
• Public URL: https://durham-repository.worktribe.com/output/1556846