DIRECT EVIDENCE FOR ITINERANT MAGNETITE ABOVE AND BELOW THE VERWEY TRANSITION TEMPERATURE

Y. Q. Cai, K. Nakatsuji, S. Ohno, T. Iimori, M. Yamada and F. Komori
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Y. Q. Cai: Synchrotron Radiation Research Center, Hsinchu Science-Based Industrial Park, Hsinchu, Taiwan 30077, R.O.C.
K. Nakatsuji: Institute for Solid State Physics, University of Tokyo, Kashiwa-shi, Chiba 277-8581, Japan
S. Ohno: Institute for Solid State Physics, University of Tokyo, Kashiwa-shi, Chiba 277-8581, Japan
T. Iimori: Institute for Solid State Physics, University of Tokyo, Kashiwa-shi, Chiba 277-8581, Japan
M. Yamada: Institute for Solid State Physics, University of Tokyo, Kashiwa-shi, Chiba 277-8581, Japan
F. Komori: Institute for Solid State Physics, University of Tokyo, Kashiwa-shi, Chiba 277-8581, Japan

Surface Review and Letters (SRL), 2002, vol. 09, issue 02, 907-912

Abstract: The valence electronic states ofFe3O4(111)films on Pt(111) were studied using temperature-dependent spin- and angle-resolved photoemission spectroscopy with synchrotron radiation. The majority- and minority-spin partial density of states (DOS) has been obtained at 300 K and 100 K, above and below the Verwey transition temperature(TV~ 120K). The spectra still show substantialk-dependence at 100 K in the3dregion. This provides the most direct experimental evidence that the3delectrons are itinerant even atT

Date: 2002
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DOI: 10.1142/S0218625X02003147

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