How do holes get heavy and superconduct?

✍ Scribed by N. Harrison; S.E. Sebastian; C.D. Batista; S.A. Trugman

• Book ID: 103885627
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 261 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.10.274

✦ Synopsis

We discuss the implications of recent de Haas-van Alphen effect (magnetic quantum oscillation) measurements on cubic CeIn 3 , which reveal pockets of f-electron holes centered at Q=2 in the Brillouin zone (where Q ¼ ½p; p; p is the antiferromagnetic modulation vector). This system had previously been identified as a local-moment magnet in which the f-electrons are completely localized. We discuss the Lifshitz Fermi surface topological changes in these pockets that takes place in strong magnetic fields and that is likely to take place as a function of pressure. We further discuss the implications for pressure-tuned superconductivity and the relevance of the experimental findings to CeRhIn 5 and cuprate superconductors.