Metamagnetic transitions, electronic structures and quantum critical point of CeRu2 (Si1 - x Gex)2

M. Sugi, T. Fujiwara, Y. Matsumoto, T. Isshiki, N. Kimura, T. Komatsubara, Hayuyoshi Aoki, I. Satoh, T. Terashima, S. Uji

Research output: Contribution to journalArticlepeer-review


We have studied the electronic structures of CeRu2 (Si1 - x Gex)2 single crystals, whose ground state changes from paramagnetic state to antiferromagnetic state with increasing Ge concentration across the quantum critical point, via the dHvA effect. It has been reported that the effective masses of the up and down spin conduction electrons in CeRu2 Si2 are considerably different, although their Fermi surfaces are nearly the same. Such anomalous conduction electron state is found to exist above the metamagnetic transition fields in both the samples of the paramagnetic and antiferromagnetic ground state.

Original languageEnglish
Pages (from-to)331-333
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 1
Publication statusPublished - 2007 Mar 1


  • Fermi surface
  • Metamagnetic Transition
  • Spin dependence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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