Itinerant U 5f Nature in Antiferromagnet U(Ru0.97Rh0.03)2Si2: Soft X-ray Angle-Resolved Photoemission Spectroscopy
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概要
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We have carried out soft X-ray angle-resolved photoemission spectroscopy experiments on U(Ru0.97Rh0.03)2Si2, which shows antiferromagnetic (AFM) ordering at low temperatures. We have revealed that U 5f electrons contribute to the formation of the energy band as well as Fermi surface. This suggests that the AFM ordering is caused by a spin density wave of itinerant U 5f electrons. The observed band dispersion and Fermi surface are nearly identical to those of URu2Si2. Therefore, the AFM ordering vector \mbi{Q}=(1,0,0) can be a possible ordering vector of the hidden order phase in URu2Si2.
- 2011-12-15
著者
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Yamamoto Etsuji
Advanced Science Research Center Japan Atomic Energy Agency
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Fujimori Shin-ichi
Condensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo 679-5148, Japan
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ONUKI Yoshichika
Advanced Science Research Center, Japan Atomic Energy Agency:Department of Physics, Graduate School of Science, Osaka University
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HAGA Yoshinori
Advance Science Research Center, Japan Atomic Energy Agency
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Saitoh Yuji
Condensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo 679-5148, Japan
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KAWASAKI Ikuto
Condensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo 679-5148, Japan
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OKANE Tetsuo
Condensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo 679-5148, Japan
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Yasui Akira
Condensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo 679-5148, Japan
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Yamagami Hiroshi
Condensed Matter Science Division, Japan Atomic Energy Agency, Sayo, Hyogo 679-5148, Japan
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