Photoemission Study of the Itinerant Helimagnetic MnSi
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概要
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We have studied the electronic structure of MnSi, which shows a helical spin ordering below 30K, by ultraviolet photoemission spectroscopy. We have attempted to separate the spectra into surface and bulk components by considering the electron mean-free path and the thickness of the outermost atomic layer. The 'bulk' spectra thus obtained are compared with the density of states given by band-structure calculation corrected for model self-energies and reasonable agreement was obtained. This indicates that both band structure and electron correlation effects are important to understand the physical properties of MnSi. The spectra in the entire valence-band region do not show appreciable temperature dependence, but the spectral weight in the vicinity of the Fermi level is slightly decreased with decreasing temperature, which we tentatively attribute to the exchange splitting of the Mn 3d bands.
- 社団法人日本物理学会の論文
- 2002-07-15
著者
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KANOMATA Takeshi
Faculty of Engineering, Tohoku Gakuin University
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FUJIMORI Atsushi
Department of Physics and Department of Complexity Science and Engineering, University of Tokyo
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Okazaki K
Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo
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Okazaki Kozo
Department Of Physics University Of Tokyo
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MIZOKAWA Takashi
Department of Physics,University of Tokyo
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NOTE Ryunosuke
Institute for Materials Research, Tohoku University
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SON Jin-Young
Department of Physics and Department of Complexity Science and Engineering, University of Tokyo
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Fujimori Atsushi
Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo
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Son Jin-young
Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo
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Mizokawa Takashi
Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo
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Mizokawa Takashi
Department Of Complexity Science And Engineering And Department Of Physics University Of Tokyo
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Kanomata Takeshi
Faculty Of Engineering Tohoku Gakuin University
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Note Ryunosuke
Institute For Material Research Tohoku University
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Fujimori Atsushi
Department Of Complexity Science And Engineering And Department Of Physics University Of Tokyo
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Okazaki Kozo
Department Of Physics And Department Of Complexity Science And Engineering University Of Tokyo
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