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機構典藏 > College of Sciences > Graduate Institute & Department of Physics > Journal Article > Item 987654321/27809

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Title:	Electronic structure of multiferroic BiFeO3 by resonant soft x-ray emission spectroscopy
Authors:	Higuchi, Tohru;Liu, Yi-Sheng;Yao, Peng;Glans, Per-Anders;Guo, Jinghua;張經霖;Chang, Chinglin;Wu, Ziyu;Sakamoto, Wataru;Itoh, Naoyuki;Shimura, Tetsuo;Yogo, Toshinobu;Hattori, Takeshi
Contributors:	淡江大學物理學系
Date:	2008-08
Issue Date:	2010-08-10 09:44:56 (UTC+8)
Publisher:	College Park: American Physical Society
Abstract:	The electronic structure of multiferroic BiFeO3 has been studied using soft x-ray emission spectroscopy. The fluorescence spectra exhibit that the valence band is mainly composed of O 2p state hybridized with Fe 3d state. The band gap corresponding to the energy separation between the top of the O 2p valence band and the bottom of the Fe 3d conduction band is 1.3 eV. The soft x-ray Raman scattering reflects the features due to the charge-transfer transition from O 2p valence band to Fe 3d conduction band. These findings are similar to the result of electronic structure calculation by density-functional theory within the local spin-density approximation that included the effect of Coulomb repulsion between localized d states.
Relation:	Physical Review B (Condensed Matter and Materials Physics) 78(8), pp.085106(5pages)
DOI:	10.1103/PhysRevB.78.085106
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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0163-1829_78(8)p085106.pdf		244Kb	Adobe PDF	372	View/Open
1098-0121_78(8)p085106(5pages).pdf		244Kb	Adobe PDF	447	View/Open