Fermi surface properties and unconventional superconductivity in rare earth, uranium and transuranium compounds

Y. Onuki, R. Settai, H. Shishido, S. Ikeda, T. D. Matsuda, E. Yamamoto, Y. Haga, D. Aoki, H. Harima, H. Harima, H. Yamagami

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We studied the various kinds of electronic states in the f-electron systems of the cubic RX3 and AnX3 compounds and the tetragonal RTX5 and AnTX5 compounds (R: rare earth, An: Th, U, Np, Pu, T: transition metal, X: Al, Ga, In, Si, Ge, Sn) through the de Haas-van Alphen experiment and the energy band calculation. The former compounds are three dimensional in the electronic states, while the latter compounds are quasi-two dimensional. Pressure experiments were also carried out for antiferromagnets CeIn3 and CeRhIn5 to change the electronic state from the antiferromagnetically ordered state to the non-magnetic state, crossing the critical pressure region where the Néel temperature becomes zero. Around this critical pressure region, d-wave superconductivity is induced, and a marked change of the Fermi surface properties from the 4f-localized state to the 4f-itinerant state occurs at this critical pressure, revealing the first-order phase transition.

Original languageEnglish
Pages (from-to)1535-1563
Number of pages29
JournalJournal of Optoelectronics and Advanced Materials
Volume10
Issue number7
Publication statusPublished - 2008 Jul

Keywords

  • Actinide compounds
  • De haas-van Alphen effect
  • Fermi surface
  • Rare earth compounds

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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