Charge-Orbital Ordering and Verwey Transition in Magnetite Measured by Resonant Soft X-Ray Scattering

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题名:	Charge-Orbital Ordering and Verwey Transition in Magnetite Measured by Resonant Soft X-Ray Scattering
作者:	Huang, D. J.;Lin, H.-J.;Okamoto, J.;Chao, K. S.;Jeng, H.-T.;Guo, G. Y.;Hsu, C.-H.;Huang, C.-M.;Ling, D. C.;Wu, W. B.;Yang, C. S.;Chen, C. T.
贡献者:	淡江大學物理學系
关键词:	Charge-orbital ordering;Thermal hysteresis;Undistorted cubic phase;Verwey transition;Electron transitions;Fermi level;Hysteresis;Lattice constants;X ray scattering;Magnetite
日期:	2006-03
上传时间:	2013-07-09 15:22:24 (UTC+8)
出版者:	College Park: American Physical Society
摘要:	We report experimental evidence for the charge-orbital ordering in magnetite below the Verwey transition temperature TV. Measurements of O K-edge resonant x-ray scattering on magnetite reveal that the O 2p states in the vicinity of the Fermi level exhibit a charge-orbital ordering along the c axis with a spatial periodicity of the doubled lattice parameter of the undistorted cubic phase. Such a charge-orbital ordering vanishes abruptly above TV and exhibits a thermal hysteresis, correlating closely with the Verwey transition in magnetite.
關聯:	Physical Review Letters 96(9), 096401(4 pages)
DOI:	10.1103/PhysRevLett.96.096401
显示于类别:	[物理學系暨研究所] 期刊論文

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