Electronic structure of U(Ru1-xRhx) 2Si2 studied by laser angle-resolved photoemission spectroscopy

R. Yoshida, Y. Nakamura, M. Fukui, Y. Haga, E. Yamamoto, Y. Onuki, M. Okawa, S. Shin, M. Hirai, Yuji Muraoka, Takayoshi Yokoya

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Abstract

We have studied electronic structures of U(Ru1-xRh x)2Si2 employing ultrahigh-resolution laser angle-resolved photoemission spectroscopy to understand the effect of Rh substitution. A hole-like dispersive feature, which presumably has Rh d-band character, was observed in U(Ru1-xRhx)2Si 2 for both x = 0 and x = 0.03. However, although a heavy quasiparticle band appears in the hidden-order state of URu2Si 2 (x = 0), it was not observed for x 0.03 over the temperature range studied. In addition, it was found that energy-distribution curves at the Fermi vector of the hole-like band for x = 0.03 behave similarly to the Fermi-Dirac function. We also present the mapping of Fermi surfaces formed by the hole-like band, which stay nearly unaffected by Rh substitution.

Original languageEnglish
Article number012021
JournalJournal of Physics: Conference Series
Volume273
Issue number1
DOIs
Publication statusPublished - 2011

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photoelectric emission
electronic structure
spectroscopy
lasers
substitutes
guy wires
Fermi surfaces
energy distribution
curves
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Electronic structure of U(Ru1-xRhx) 2Si2 studied by laser angle-resolved photoemission spectroscopy. / Yoshida, R.; Nakamura, Y.; Fukui, M.; Haga, Y.; Yamamoto, E.; Onuki, Y.; Okawa, M.; Shin, S.; Hirai, M.; Muraoka, Yuji; Yokoya, Takayoshi.

In: Journal of Physics: Conference Series, Vol. 273, No. 1, 012021, 2011.

Research output: Contribution to journalArticle

Yoshida, R. ; Nakamura, Y. ; Fukui, M. ; Haga, Y. ; Yamamoto, E. ; Onuki, Y. ; Okawa, M. ; Shin, S. ; Hirai, M. ; Muraoka, Yuji ; Yokoya, Takayoshi. / Electronic structure of U(Ru1-xRhx) 2Si2 studied by laser angle-resolved photoemission spectroscopy. In: Journal of Physics: Conference Series. 2011 ; Vol. 273, No. 1.
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AU - Nakamura, Y.

AU - Fukui, M.

AU - Haga, Y.

AU - Yamamoto, E.

AU - Onuki, Y.

AU - Okawa, M.

AU - Shin, S.

AU - Hirai, M.

AU - Muraoka, Yuji

AU - Yokoya, Takayoshi

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