Resonant angle-resolved photoelectron spectroscopy of substitutional solid solutions of CeRu2Si2

T. Okane; I. Kawasaki; A. Yasui; T. Ohkochi; Y. Takeda; S. I. Fujimori; Y. Saitoh; H. Yamagami; A. Fujimori; Y. Matsumoto; N. Kimura; T. Komatsubara; H. Aoki

doi:10.1143/JPSJS.80SA.SA060

Resonant angle-resolved photoelectron spectroscopy of substitutional solid solutions of CeRu₂Si₂

T. Okane^*, I. Kawasaki, A. Yasui, T. Ohkochi, Y. Takeda, S. I. Fujimori, Y. Saitoh, H. Yamagami, A. Fujimori, Y. Matsumoto, N. Kimura, T. Komatsubara, H. Aoki

^*Corresponding author for this work

Department of Physics

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

2 Scopus citations

Abstract

Angle-resolved photoelectron spectroscopy was measured in the Ce 3d→4f resonance energy region for the paramagnetic state of CeRu₂Si ₂, Ce_0.84La_0.16Ru₂Si₂ and LaRu₂Si₂ to investigate a variation of band structures around the quantum critical point (QCP). While the results clearly demonstrate the difference of the band structures between CeRu₂Si₂ and LaRu₂Si₂, the observed band structures of CeRu ₂Si₂ and Ce_0.84La_0.16Ru ₂Si₂ resemble each other. The results indicate that the Ce 4 f electrons in the paramagnetic state have an itinerant character in either side of the critical composition, and Ce_1-xLa_xRu ₂Si₂ near QCP is similar to CeRu₂(Si _1-xGe_x)₂.

Original language	English
Article number	SA060
Journal	Journal of the Physical Society of Japan
Volume	80
Issue number	SUPPL. A
DOIs	https://doi.org/10.1143/JPSJS.80SA.SA060
State	Published - 2011/07

Keywords

Angle-resolved photoelectron spectroscopy
Heavy fermion
Quantum criticality

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1143/JPSJS.80SA.SA060

Cite this

Okane, T., Kawasaki, I., Yasui, A., Ohkochi, T., Takeda, Y., Fujimori, S. I., Saitoh, Y., Yamagami, H., Fujimori, A., Matsumoto, Y., Kimura, N., Komatsubara, T., & Aoki, H. (2011). Resonant angle-resolved photoelectron spectroscopy of substitutional solid solutions of CeRu₂Si₂. Journal of the Physical Society of Japan, 80(SUPPL. A), Article SA060. https://doi.org/10.1143/JPSJS.80SA.SA060

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title = "Resonant angle-resolved photoelectron spectroscopy of substitutional solid solutions of CeRu2Si2",

abstract = "Angle-resolved photoelectron spectroscopy was measured in the Ce 3d→4f resonance energy region for the paramagnetic state of CeRu2Si 2, Ce0.84La0.16Ru2Si2 and LaRu2Si2 to investigate a variation of band structures around the quantum critical point (QCP). While the results clearly demonstrate the difference of the band structures between CeRu2Si2 and LaRu2Si2, the observed band structures of CeRu 2Si2 and Ce0.84La0.16Ru 2Si2 resemble each other. The results indicate that the Ce 4 f electrons in the paramagnetic state have an itinerant character in either side of the critical composition, and Ce1-xLaxRu 2Si2 near QCP is similar to CeRu2(Si 1-xGex)2.",

keywords = "Angle-resolved photoelectron spectroscopy, Heavy fermion, Quantum criticality",

author = "T. Okane and I. Kawasaki and A. Yasui and T. Ohkochi and Y. Takeda and Fujimori, {S. I.} and Y. Saitoh and H. Yamagami and A. Fujimori and Y. Matsumoto and N. Kimura and T. Komatsubara and H. Aoki",

year = "2011",

month = jul,

doi = "10.1143/JPSJS.80SA.SA060",

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Okane, T, Kawasaki, I, Yasui, A, Ohkochi, T, Takeda, Y, Fujimori, SI, Saitoh, Y, Yamagami, H, Fujimori, A, Matsumoto, Y, Kimura, N, Komatsubara, T & Aoki, H 2011, 'Resonant angle-resolved photoelectron spectroscopy of substitutional solid solutions of CeRu₂Si₂', Journal of the Physical Society of Japan, vol. 80, no. SUPPL. A, SA060. https://doi.org/10.1143/JPSJS.80SA.SA060

TY - JOUR

T1 - Resonant angle-resolved photoelectron spectroscopy of substitutional solid solutions of CeRu2Si2

AU - Okane, T.

AU - Kawasaki, I.

AU - Yasui, A.

AU - Ohkochi, T.

AU - Takeda, Y.

AU - Fujimori, S. I.

AU - Saitoh, Y.

AU - Yamagami, H.

AU - Fujimori, A.

AU - Matsumoto, Y.

AU - Kimura, N.

AU - Komatsubara, T.

AU - Aoki, H.

PY - 2011/7

Y1 - 2011/7

N2 - Angle-resolved photoelectron spectroscopy was measured in the Ce 3d→4f resonance energy region for the paramagnetic state of CeRu2Si 2, Ce0.84La0.16Ru2Si2 and LaRu2Si2 to investigate a variation of band structures around the quantum critical point (QCP). While the results clearly demonstrate the difference of the band structures between CeRu2Si2 and LaRu2Si2, the observed band structures of CeRu 2Si2 and Ce0.84La0.16Ru 2Si2 resemble each other. The results indicate that the Ce 4 f electrons in the paramagnetic state have an itinerant character in either side of the critical composition, and Ce1-xLaxRu 2Si2 near QCP is similar to CeRu2(Si 1-xGex)2.

AB - Angle-resolved photoelectron spectroscopy was measured in the Ce 3d→4f resonance energy region for the paramagnetic state of CeRu2Si 2, Ce0.84La0.16Ru2Si2 and LaRu2Si2 to investigate a variation of band structures around the quantum critical point (QCP). While the results clearly demonstrate the difference of the band structures between CeRu2Si2 and LaRu2Si2, the observed band structures of CeRu 2Si2 and Ce0.84La0.16Ru 2Si2 resemble each other. The results indicate that the Ce 4 f electrons in the paramagnetic state have an itinerant character in either side of the critical composition, and Ce1-xLaxRu 2Si2 near QCP is similar to CeRu2(Si 1-xGex)2.

KW - Angle-resolved photoelectron spectroscopy

KW - Heavy fermion

KW - Quantum criticality

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