Magnetic and Fermi surface properties of the ferromagnetic compound UGa2

Tetsuo Honma; Yoshihiko Inada; Rikio Settai; Shingo Araki; Yoshihumi Tokiwa; Tetsuya Takeuchi; Hitoshi Sugawara; Hideyuki Sato; Keitaro Kuwahara; Makoto Yokoyama; Hiroshi Amitsuka; Toshiro Sakakibara; Etsuji Yamamoto; Yoshinori Haga; Akio Nakamura; Hisatomo Harima; Hiroshi Yamagami; Yoshichika Onuki

doi:10.1143/JPSJ.69.2647

Magnetic and Fermi surface properties of the ferromagnetic compound UGa₂

Tetsuo Honma, Yoshihiko Inada, Rikio Settai, Shingo Araki, Yoshihumi Tokiwa, Tetsuya Takeuchi, Hitoshi Sugawara, Hideyuki Sato, Keitaro Kuwahara, Makoto Yokoyama, Hiroshi Amitsuka, Toshiro Sakakibara, Etsuji Yamamoto, Yoshinori Haga, Akio Nakamura, Hisatomo Harima, Hiroshi Yamagami, Yoshichika Onuki

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

23 Citations (Scopus)

Abstract

We have studied the magnetic and Fermi surface properties in a ferromagnet UGa₂. The electrical resistivity, elastic constant, thermal expansion coefficient, thermoelectric power, magnetic susceptibility and Hall coefficient indicate highly anisotropic properties, reflecting the hexagonal structure. The 5f²- and 5f³-CEF schemes, based on the localized 5f-electron nature, are discussed to understand the magnetic susceptibility and magnetization data. We have also done the magnetoresistance and de Haas-van Alphen (dHvA) experiments to investigate the Fermi surface properties. Both data are very complicated, implying that the Fermi surface is a multiply-connected one. They are explained neither by the localized 5f²- and 5f³-core models nor by the spin-polarized 5f-itinerant model. The cyclotron mass is, however, rather light, ranging from 0.17 to 6.2m₀, which is consistent with the electronic specific heat coefficient of 11 mJ/K²-mol.

Original language	English
Pages (from-to)	2647-2659
Number of pages	13
Journal	journal of the physical society of japan
Volume	69
Issue number	8
DOIs	https://doi.org/10.1143/JPSJ.69.2647
Publication status	Published - Aug 2000
Externally published	Yes

Keywords

De Haas-van Alphen effect
Ferromagnet
Magnetoresistance
UGa

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.69.2647

Cite this

Honma, T., Inada, Y., Settai, R., Araki, S., Tokiwa, Y., Takeuchi, T., Sugawara, H., Sato, H., Kuwahara, K., Yokoyama, M., Amitsuka, H., Sakakibara, T., Yamamoto, E., Haga, Y., Nakamura, A., Harima, H., Yamagami, H., & Onuki, Y. (2000). Magnetic and Fermi surface properties of the ferromagnetic compound UGa₂. journal of the physical society of japan, 69(8), 2647-2659. https://doi.org/10.1143/JPSJ.69.2647

Honma, T, Inada, Y, Settai, R, Araki, S, Tokiwa, Y, Takeuchi, T, Sugawara, H, Sato, H, Kuwahara, K, Yokoyama, M, Amitsuka, H, Sakakibara, T, Yamamoto, E, Haga, Y, Nakamura, A, Harima, H, Yamagami, H & Onuki, Y 2000, 'Magnetic and Fermi surface properties of the ferromagnetic compound UGa₂', journal of the physical society of japan, vol. 69, no. 8, pp. 2647-2659. https://doi.org/10.1143/JPSJ.69.2647

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title = "Magnetic and Fermi surface properties of the ferromagnetic compound UGa2",

abstract = "We have studied the magnetic and Fermi surface properties in a ferromagnet UGa2. The electrical resistivity, elastic constant, thermal expansion coefficient, thermoelectric power, magnetic susceptibility and Hall coefficient indicate highly anisotropic properties, reflecting the hexagonal structure. The 5f2- and 5f3-CEF schemes, based on the localized 5f-electron nature, are discussed to understand the magnetic susceptibility and magnetization data. We have also done the magnetoresistance and de Haas-van Alphen (dHvA) experiments to investigate the Fermi surface properties. Both data are very complicated, implying that the Fermi surface is a multiply-connected one. They are explained neither by the localized 5f2- and 5f3-core models nor by the spin-polarized 5f-itinerant model. The cyclotron mass is, however, rather light, ranging from 0.17 to 6.2m0, which is consistent with the electronic specific heat coefficient of 11 mJ/K2-mol.",

keywords = "De Haas-van Alphen effect, Ferromagnet, Magnetoresistance, UGa",

author = "Tetsuo Honma and Yoshihiko Inada and Rikio Settai and Shingo Araki and Yoshihumi Tokiwa and Tetsuya Takeuchi and Hitoshi Sugawara and Hideyuki Sato and Keitaro Kuwahara and Makoto Yokoyama and Hiroshi Amitsuka and Toshiro Sakakibara and Etsuji Yamamoto and Yoshinori Haga and Akio Nakamura and Hisatomo Harima and Hiroshi Yamagami and Yoshichika Onuki",

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T1 - Magnetic and Fermi surface properties of the ferromagnetic compound UGa2

AU - Honma, Tetsuo

AU - Inada, Yoshihiko

AU - Settai, Rikio

AU - Araki, Shingo

AU - Tokiwa, Yoshihumi

AU - Takeuchi, Tetsuya

AU - Sugawara, Hitoshi

AU - Sato, Hideyuki

AU - Kuwahara, Keitaro

AU - Yokoyama, Makoto

AU - Amitsuka, Hiroshi

AU - Sakakibara, Toshiro

AU - Yamamoto, Etsuji

AU - Haga, Yoshinori

AU - Nakamura, Akio

AU - Harima, Hisatomo

AU - Yamagami, Hiroshi

AU - Onuki, Yoshichika

PY - 2000/8

Y1 - 2000/8

N2 - We have studied the magnetic and Fermi surface properties in a ferromagnet UGa2. The electrical resistivity, elastic constant, thermal expansion coefficient, thermoelectric power, magnetic susceptibility and Hall coefficient indicate highly anisotropic properties, reflecting the hexagonal structure. The 5f2- and 5f3-CEF schemes, based on the localized 5f-electron nature, are discussed to understand the magnetic susceptibility and magnetization data. We have also done the magnetoresistance and de Haas-van Alphen (dHvA) experiments to investigate the Fermi surface properties. Both data are very complicated, implying that the Fermi surface is a multiply-connected one. They are explained neither by the localized 5f2- and 5f3-core models nor by the spin-polarized 5f-itinerant model. The cyclotron mass is, however, rather light, ranging from 0.17 to 6.2m0, which is consistent with the electronic specific heat coefficient of 11 mJ/K2-mol.

AB - We have studied the magnetic and Fermi surface properties in a ferromagnet UGa2. The electrical resistivity, elastic constant, thermal expansion coefficient, thermoelectric power, magnetic susceptibility and Hall coefficient indicate highly anisotropic properties, reflecting the hexagonal structure. The 5f2- and 5f3-CEF schemes, based on the localized 5f-electron nature, are discussed to understand the magnetic susceptibility and magnetization data. We have also done the magnetoresistance and de Haas-van Alphen (dHvA) experiments to investigate the Fermi surface properties. Both data are very complicated, implying that the Fermi surface is a multiply-connected one. They are explained neither by the localized 5f2- and 5f3-core models nor by the spin-polarized 5f-itinerant model. The cyclotron mass is, however, rather light, ranging from 0.17 to 6.2m0, which is consistent with the electronic specific heat coefficient of 11 mJ/K2-mol.

KW - De Haas-van Alphen effect

KW - Ferromagnet

KW - Magnetoresistance

KW - UGa

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