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

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

Science

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	2098-2102
Number of pages	5
Journal	Journal of the Physical Society of Japan
Volume	62
Issue number	6
Publication status	Published - 1993 Jun

Keywords

De Haas-van Alphen effect
Heavy fermion
YbAs

ASJC Scopus subject areas

Physics and Astronomy(all)

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De Haas-van Alphen studies of YbAs above and below Néel temperature. / Takeda, Naoya; Tanaka, Katsunori; Kagawa, Masaki; Oyamada, Akira; Sato, Noriaki; Sakatsume, Shinichi; Aoki, Haruyoshi; Suzuki, Takashi; Komatsubara, Takemi.

In: Journal of the Physical Society of Japan, Vol. 62, No. 6, 06.1993, p. 2098-2102.

Research output: Contribution to journal › Article › peer-review

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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 N{\'e}el temperature. This anomaly is ascribed to the change of the cyclotron mass and the Dingle temperature at the N{\'e}el temperature. To explain the large electronic specific heat coefficient, the extremely heavy hole surface with about 103 m0 should exist.",

keywords = "De Haas-van Alphen effect, Heavy fermion, YbAs",

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AU - Takeda, Naoya

AU - Tanaka, Katsunori

AU - Kagawa, Masaki

AU - Oyamada, Akira

AU - Sato, Noriaki

AU - Sakatsume, Shinichi

AU - Aoki, Haruyoshi

AU - Suzuki, Takashi

AU - Komatsubara, Takemi

PY - 1993/6

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N2 - 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.

AB - 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.

KW - De Haas-van Alphen effect

KW - Heavy fermion

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

Abstract

Keywords

ASJC Scopus subject areas

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