A change of the Fermi surface across the metamagnetic transition under pressure in UGe2

Y. Haga, M. Nakashima, R. Settai, S. Ikeda, T. Okubo, S. Araki, T. C. Kobayashi, N. Tateiwa, Y. Onuki

Research output: Contribution to journalLetter

26 Citations (Scopus)

Abstract

We have performed the de Haas-van Alphen (dHvA) and ac-susceptibility experiments on a ferromagnet UGe2 under pressure for the field along the easy a-axis. The p-H phase diagram was determined, indicating three kinds of phase: paramagnetic and weakly and strongly polarized phases. The detected dHvA frequencies as well as the cyclotron masses are found to be very different between the weakly and strongly polarized states. A change of the Fermi surface occurs when the weakly polarized phase is changed into the strongly polarized phase with increasing magnetic field.

Original languageEnglish
Pages (from-to)L125-L135
JournalJournal of Physics Condensed Matter
Volume14
Issue number5
DOIs
Publication statusPublished - Feb 11 2002
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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