Magnetic Phase Transition of CeSb Studied by Low-Energy Angle-Resolved Photoemission Spectroscopy
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概要
- 論文の詳細を見る
We have performed low-energy ultrahigh-resolution angle-resolved photoemission spectroscopy on CeSb to elucidate the bulk electronic structure responsible for the magnetic phase transition. By using a newly developed xenon-plasma discharge lamp, we clearly observed the splitting of Sb 5p3/2 and Ce 5d bands near the Fermi level as well as their strong hybridization below the Néel temperature ($T_{\text{N}}=16$ K). We also revealed distinct differences in the band structure between the antiferropara- and antiferro-magnetic phases. These experimental results are discussed in terms of the $ p$–$ f$/$ p$–$d$ mixing effect, the exchange splitting, and the magnetic band-folding. The present result also explains the emergence of fine structures in the optical conductivity in the magnetic phase.
- Physical Society of Japanの論文
- 2009-07-15
著者
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SOUMA Seigo
WPI Research Center, Advanced Institute for Materials Research, Tohoku University
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Sato Takafumi
Department Of Applied Chemistry Utsunomiya University
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Takayama Akari
Department Of Physics Tohoku University
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Takahashi Takashi
Department Of Applied Chemistry Graduate School Of Science And Engineering Tokyo Institute Of Techno
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Arakane Toshiyuki
Department Of Physics Tohoku University
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Sato Takafumi
Department of Physics, Tohoku University, Sendai 980-8578
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Arakane Toshiyuki
Department of Physics, Tohoku University, Sendai 980-8578
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Takayama Akari
Department of Physics, Tohoku University, Sendai 980-8578
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