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Superconductivity and Magnetic Order: Low Temperature Phase Diagrams

Published online by Cambridge University Press:  15 February 2011

M. Brian Maple*
Affiliation:
Department of Physics and Institute for Pure and Applied Physical Sciences University of California, San Diego, La Jolla, CA 92093
*
* Research supported by the U. S. Department of Energy under Contract No. DE-AT03-7 6ER7 0227.
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Abstract

Recent experiments on magnetically-ordered ternary and pseudoternary rare earth superconductors are briefly reviewed. Superconductivity has been found to coexist with antiferromagnetic order, but to be destroyed by the onset of ferromagnetic order at a second transition temperature Tc2∼TM, where TM is the Curie temperature. In antiferromagnetic superconductors, the antiferromagnetic order modifies superconducting properties such as the curve of the upper critical magnetic field versus temperature. In ferromagnetic superconductors, a long wavelength (∼ 102 Å sinusoidally modulated magnetic state develops in the superconducting state as a result of the superconducting-ferromagnetic interactions. The interplay of superconductivity and competing magnetic interactions in pseudoternary rare earth systems produces complex and interesting low temperature phase diagrams.

Type
Research Article
Copyright
Copyright © Materials Research Society 1983

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