Coupled superconducting and magnetic order in CeCoIn5 [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators: Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

Strong magnetic fluctuations can provide a coupling mechanism for electrons that leads to unconventional superconductivity. Magnetic order and superconductivity have been found to coexist in a number of magnetically-mediated superconductors, but these order parameters generally compete. We report that close to the upper critical field, CeCoIn₅ adopts a multi-component ground state that simultaneously carries cooperating magnetic and superconducting order. Suppressing superconductivity in a first-order transition at the upper critical field leads to the simultaneous collapse of the magnetic order, showing that superconductivity is necessary for the magnetic order. A symmetry analysis of the coupling between the magnetic order and the superconducting gap function suggests a form of superconductivity that is associated with a non-vanishing momentum.

Report Numbers

E 1.99:la-ur-08-05388
E 1.99: la-ur-08-5388
la-ur-08-5388
la-ur-08-05388

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Note

Published through SciTech Connect.
01/01/2008.
"la-ur-08-05388"
" la-ur-08-5388"
Science ISSN 0193-4511; SCEHDK FT
Bianchi, A D; Sigrist, M; Padmanabhan, B; Sarrao, J D; Niedermayer, C; Zolliker, M; Bauer, Eric D; Strassle, Th.; Thompson, Joe D; Movshovich, Roman; Kenselmann, M.

Funding Information

AC52-06NA25396

View MARC record | catkey: 14445503