Details

Autor(en) / Beteiligte

• KENZELMANN, M
• STRÄSSLE, Th
• THOMPSON, J. D
• NIEDERMAYER, C
• SIGRIST, M
• PADMANABHAN, B
• ZOLLIKER, M
• BIANCHI, A. D
• MOVSHOVICH, R
• SAVER, E. D
• SARRAO, J. L

Titel

Coupled Superconducting and Magnetic Order in CeCoIn5

Ist Teil von

• Science (American Association for the Advancement of Science), 2008-09, Vol.321 (5896), p.1652-1654

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2008

Quelle

Science Online科学在线

Beschreibungen/Notizen

• 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 multicomponent ground state that simultaneously carries cooperating magnetic and superconducting orders. 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 nonvanishing momentum.