Two dimensional Fermi surfaces of CePtAs and CePtP studied by the de Haas-van Alphen and magnetoresistance experiments

Rikio Settai; Yoshiyuki Yoshida; Akinobu Yamaguchi; Yoshichika Onuki; Shunsuke Yoshii; Mitsuo Kasaya; Hisatomo Harima; Katsuhiko Takegahara

doi:10.1143/JPSJ.68.3615

Two dimensional Fermi surfaces of CePtAs and CePtP studied by the de Haas-van Alphen and magnetoresistance experiments

Rikio Settai, Yoshiyuki Yoshida, Akinobu Yamaguchi, Yoshichika Onuki, Shunsuke Yoshii, Mitsuo Kasaya, Hisatomo Harima, Katsuhiko Takegahara

Institute for Materials Research (IMR)

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

13 Citations (Scopus)

Abstract

We have found the cylindrical Fermi surfaces of CePtX (X=As, P) by the de Haas-van Alphen (dHvA) and magnetoresistance experiments. This is mainly due to the crystal structure, where the nearest neighbor distance between Pt and X atoms on the Pt-X plane is extremely short. The strong hybridization between the Pt 5d(x² - y², xy) and X p(x, y) states makes partially occupied anti-bonding bands, resulting in the cylindrical Fermi surfaces. The cyclotron effective mass is light, being in the range of 0.47 to 0.84 m₀ for CePtAs and 0.34 to 0.82 m₀ for CePtP. The present experimental results are well explained by the FLAPW band calculations.

Original language	English
Pages (from-to)	3615-3622
Number of pages	8
Journal	journal of the physical society of japan
Volume	68
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.68.3615
Publication status	Published - 1999 Jan 1

Keywords

Band theory
CePtAs
CePtP
Magnetoresistance
de Haas-van Alphen effect

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.68.3615

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Two dimensional Fermi surfaces of CePtAs and CePtP studied by the de Haas-van Alphen and magnetoresistance experiments. / Settai, Rikio; Yoshida, Yoshiyuki; Yamaguchi, Akinobu; Onuki, Yoshichika; Yoshii, Shunsuke; Kasaya, Mitsuo; Harima, Hisatomo; Takegahara, Katsuhiko.

In: journal of the physical society of japan, Vol. 68, No. 11, 01.01.1999, p. 3615-3622.

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

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title = "Two dimensional Fermi surfaces of CePtAs and CePtP studied by the de Haas-van Alphen and magnetoresistance experiments",

abstract = "We have found the cylindrical Fermi surfaces of CePtX (X=As, P) by the de Haas-van Alphen (dHvA) and magnetoresistance experiments. This is mainly due to the crystal structure, where the nearest neighbor distance between Pt and X atoms on the Pt-X plane is extremely short. The strong hybridization between the Pt 5d(x2 - y2, xy) and X p(x, y) states makes partially occupied anti-bonding bands, resulting in the cylindrical Fermi surfaces. The cyclotron effective mass is light, being in the range of 0.47 to 0.84 m0 for CePtAs and 0.34 to 0.82 m0 for CePtP. The present experimental results are well explained by the FLAPW band calculations.",

keywords = "Band theory, CePtAs, CePtP, Magnetoresistance, de Haas-van Alphen effect",

author = "Rikio Settai and Yoshiyuki Yoshida and Akinobu Yamaguchi and Yoshichika Onuki and Shunsuke Yoshii and Mitsuo Kasaya and Hisatomo Harima and Katsuhiko Takegahara",

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AU - Settai, Rikio

AU - Yoshida, Yoshiyuki

AU - Yamaguchi, Akinobu

AU - Onuki, Yoshichika

AU - Yoshii, Shunsuke

AU - Kasaya, Mitsuo

AU - Harima, Hisatomo

AU - Takegahara, Katsuhiko

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We have found the cylindrical Fermi surfaces of CePtX (X=As, P) by the de Haas-van Alphen (dHvA) and magnetoresistance experiments. This is mainly due to the crystal structure, where the nearest neighbor distance between Pt and X atoms on the Pt-X plane is extremely short. The strong hybridization between the Pt 5d(x2 - y2, xy) and X p(x, y) states makes partially occupied anti-bonding bands, resulting in the cylindrical Fermi surfaces. The cyclotron effective mass is light, being in the range of 0.47 to 0.84 m0 for CePtAs and 0.34 to 0.82 m0 for CePtP. The present experimental results are well explained by the FLAPW band calculations.

AB - We have found the cylindrical Fermi surfaces of CePtX (X=As, P) by the de Haas-van Alphen (dHvA) and magnetoresistance experiments. This is mainly due to the crystal structure, where the nearest neighbor distance between Pt and X atoms on the Pt-X plane is extremely short. The strong hybridization between the Pt 5d(x2 - y2, xy) and X p(x, y) states makes partially occupied anti-bonding bands, resulting in the cylindrical Fermi surfaces. The cyclotron effective mass is light, being in the range of 0.47 to 0.84 m0 for CePtAs and 0.34 to 0.82 m0 for CePtP. The present experimental results are well explained by the FLAPW band calculations.

KW - Band theory

KW - CePtAs

KW - CePtP

KW - Magnetoresistance

KW - de Haas-van Alphen effect

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Two dimensional Fermi surfaces of CePtAs and CePtP studied by the de Haas-van Alphen and magnetoresistance experiments

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