Electronic states of La(Fe $_{0.88}$ Si $_{0.12}$ ) $_{13}$

Kamakura, Nozomu; Okane, Tetsuo ; Takeda, Yukiharu ; Fujimori, Shinichi ; Saito, Yuji ; Yamagami, Hiroshi; Fujimori, Atsushi

La(Fe $_{0.88}$ Si $_{0.12}$ ) $_{13}$ is expected for the practical application using the magnetic transition temperature controlled by hydrogen absorption. In this study, the electronic structure of La(Fe $_{0.88}$ Si $_{0.12}$ ) $_{13}$ which shows the first order paramagnetic-ferromagnetic transition is investigated by soft X-ray photoemission spectroscopy at BL23SU of SPring-8. The valence band photoemission spectrum of La(Fe $_{0.88}$ Si $_{0.12}$ ) $_{13}$ shows the temperature dependence originating from the exchange splitting of Fe 3d band across the Curie temperature. The Fe 3s core-level photoemission spectra below and above the Curie temperature exhibit the exchange splitting of 4.3 eV due to the local moment of Fe. In the session, the temperature dependent electronic structure across the first order magnetic transition has been presented.

Language	:	Japanese
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Meeting title	:	日本物理学会2010年秋季大会(物性)
Held date	:	2010/09
Location (city)	:	堺
Location (country)	:	日本
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Keywords	:	no keyword
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Cooperating Institute	:	新エネルギー・産業技術総合開発機構

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Registration No. : BB20102338
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Electronic states of La(FeSi)

Electronic states of La(Fe $_{0.88}$ Si $_{0.12}$ ) $_{13}$