De Haas-van Alphen studies of YbAs above and below Néel temperature

Naoya Takeda, Katsunori Tanaka, Masaki Kagawa, Akira Oyamada, Noriaki Sato, Shinichi Sakatsume, Haruyoshi Aoki, Takashi Suzuki, Takemi Komatsubara

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11 Citations (Scopus)

Abstract

We have studied the Fermi surface and the cyclotron mass of a semimetallic heavy fermion compound YbAs both in the antiferromagnetic state and the paramagnetic state. We have found the Fermi surface of three ellipsoidal electron surfaces and one spherical hole surface, and that the shape of these Fermi surfaces is the same in both states. In addition, we have found that the temperature dependence of the dHvA oscillatory amplitudes change anomalously at the Néel temperature. This anomaly is ascribed to the change of the cyclotron mass and the Dingle temperature at the Néel temperature. To explain the large electronic specific heat coefficient, the extremely heavy hole surface with about 103 m0 should exist.

Original languageEnglish
Pages (from-to)2098-2102
Number of pages5
JournalJournal of the Physical Society of Japan
Volume62
Issue number6
Publication statusPublished - 1993 Jun

Keywords

  • De Haas-van Alphen effect
  • Heavy fermion
  • YbAs

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Takeda, N., Tanaka, K., Kagawa, M., Oyamada, A., Sato, N., Sakatsume, S., Aoki, H., Suzuki, T., & Komatsubara, T. (1993). De Haas-van Alphen studies of YbAs above and below Néel temperature. Journal of the Physical Society of Japan, 62(6), 2098-2102.