Band structures of CeRu2(Si1-xGex)2 studied by resonant soft X-ray ARPES

Tetsuo Okane; Takuo Ohkochi; Yukiharu Takeda; Shin ichi Fujimori; Akira Yasui; Yuji Saitoh; Hiroshi Yamagami; Atsushi Fujimori; Yuji Matsumoto; Motoki Sugi; Noriaki Kimura; Takemi Komatsubara; Haruyoshi Aoki

doi:10.1002/pssb.200983019

Band structures of CeRu₂(Si_1-xGe_x)₂ studied by resonant soft X-ray ARPES

Tetsuo Okane, Takuo Ohkochi, Yukiharu Takeda, Shin ichi Fujimori, Akira Yasui, Yuji Saitoh, Hiroshi Yamagami, Atsushi Fujimori, Yuji Matsumoto, Motoki Sugi, Noriaki Kimura, Takemi Komatsubara, Haruyoshi Aoki

SCI - Physics

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

Angle-resolved photoelectron spectroscopy (ARPES) measurements were made in the Ce 3d → 4f resonance energy region for the paramagnetic state of CeRu₂Si₂, CeRu₂(Si_0.82Ge_0.18)₂, and LaRu₂Si₂ to investigate a variation of band structures around the quantum critical point (QCP). The observed band structures are very similar between CeRu₂Si₂ and CeRu₂(Si_0.82Ge_0.18)₂. The results indicate that the Ce 4f electrons in the paramagnetic state have an itinerant character and participate in the formation of energy bands both in CeRu₂Si₂ and CeRu₂(Si_0.82Ge_0.18)₂, and the change of the band structures in the paramagnetic states should be continuous around the QCP of the CeRu₂(Si_1-xGe_x)₂ system.

Original language	English
Pages (from-to)	697-699
Number of pages	3
Journal	Physica Status Solidi (B) Basic Research
Volume	247
Issue number	3
DOIs	https://doi.org/10.1002/pssb.200983019
Publication status	Published - 2010 Mar 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Okane, T., Ohkochi, T., Takeda, Y., Fujimori, S. I., Yasui, A., Saitoh, Y., Yamagami, H., Fujimori, A., Matsumoto, Y., Sugi, M., Kimura, N., Komatsubara, T., & Aoki, H. (2010). Band structures of CeRu₂(Si_1-xGe_x)₂ studied by resonant soft X-ray ARPES. Physica Status Solidi (B) Basic Research, 247(3), 697-699. https://doi.org/10.1002/pssb.200983019

Band structures of CeRu₂(Si_1-xGe_x)₂ studied by resonant soft X-ray ARPES. / Okane, Tetsuo; Ohkochi, Takuo; Takeda, Yukiharu; Fujimori, Shin ichi; Yasui, Akira; Saitoh, Yuji; Yamagami, Hiroshi; Fujimori, Atsushi; Matsumoto, Yuji; Sugi, Motoki; Kimura, Noriaki; Komatsubara, Takemi; Aoki, Haruyoshi.

In: Physica Status Solidi (B) Basic Research, Vol. 247, No. 3, 01.03.2010, p. 697-699.

Research output: Contribution to journal › Article

Okane, Tetsuo ; Ohkochi, Takuo ; Takeda, Yukiharu ; Fujimori, Shin ichi ; Yasui, Akira ; Saitoh, Yuji ; Yamagami, Hiroshi ; Fujimori, Atsushi ; Matsumoto, Yuji ; Sugi, Motoki ; Kimura, Noriaki ; Komatsubara, Takemi ; Aoki, Haruyoshi. / Band structures of CeRu₂(Si_1-xGe_x)₂ studied by resonant soft X-ray ARPES. In: Physica Status Solidi (B) Basic Research. 2010 ; Vol. 247, No. 3. pp. 697-699.

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title = "Band structures of CeRu2(Si1-xGex)2 studied by resonant soft X-ray ARPES",

abstract = "Angle-resolved photoelectron spectroscopy (ARPES) measurements were made in the Ce 3d → 4f resonance energy region for the paramagnetic state of CeRu2Si2, CeRu2(Si0.82Ge0.18)2, and LaRu2Si2 to investigate a variation of band structures around the quantum critical point (QCP). The observed band structures are very similar between CeRu2Si2 and CeRu2(Si0.82Ge0.18)2. The results indicate that the Ce 4f electrons in the paramagnetic state have an itinerant character and participate in the formation of energy bands both in CeRu2Si2 and CeRu2(Si0.82Ge0.18)2, and the change of the band structures in the paramagnetic states should be continuous around the QCP of the CeRu2(Si1-xGex)2 system.",

author = "Tetsuo Okane and Takuo Ohkochi and Yukiharu Takeda and Fujimori, {Shin ichi} and Akira Yasui and Yuji Saitoh and Hiroshi Yamagami and Atsushi Fujimori and Yuji Matsumoto and Motoki Sugi and Noriaki Kimura and Takemi Komatsubara and Haruyoshi Aoki",

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AU - Okane, Tetsuo

AU - Ohkochi, Takuo

AU - Takeda, Yukiharu

AU - Fujimori, Shin ichi

AU - Yasui, Akira

AU - Saitoh, Yuji

AU - Yamagami, Hiroshi

AU - Fujimori, Atsushi

AU - Matsumoto, Yuji

AU - Sugi, Motoki

AU - Kimura, Noriaki

AU - Komatsubara, Takemi

AU - Aoki, Haruyoshi

PY - 2010/3/1

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AB - Angle-resolved photoelectron spectroscopy (ARPES) measurements were made in the Ce 3d → 4f resonance energy region for the paramagnetic state of CeRu2Si2, CeRu2(Si0.82Ge0.18)2, and LaRu2Si2 to investigate a variation of band structures around the quantum critical point (QCP). The observed band structures are very similar between CeRu2Si2 and CeRu2(Si0.82Ge0.18)2. The results indicate that the Ce 4f electrons in the paramagnetic state have an itinerant character and participate in the formation of energy bands both in CeRu2Si2 and CeRu2(Si0.82Ge0.18)2, and the change of the band structures in the paramagnetic states should be continuous around the QCP of the CeRu2(Si1-xGex)2 system.

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