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Author Ueda, S. ♦ Mizuguchi, M. ♦ Kang, J. G. ♦ Takanashi, K. ♦ Miura, Y. ♦ Shirai, M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ANISOTROPY ♦ CLUSTER MODEL ♦ COMPARATIVE EVALUATIONS ♦ DENSITY ♦ DENSITY OF STATES ♦ ELECTRON CORRELATION ♦ ELECTRONIC STRUCTURE ♦ ELECTRONS ♦ HARD X RADIATION ♦ HYBRIDIZATION ♦ IRON ♦ L-S COUPLING ♦ PHOTOELECTRON SPECTROSCOPY ♦ PHOTOEMISSION ♦ PLATINUM ♦ SPIN ♦ THIN FILMS ♦ VALENCE
Abstract We have studied the electronic structure of the L1{sub 0} ordered FePt thin film by hard x-ray photoemission spectroscopy (HAXPES), cluster model, and first-principles calculations to investigate the relationship between the electronic structure and perpendicular magneto-crystalline anisotropy (MCA). The Fe 2p core-level HAXPES spectrum of the ordered film revealed the strong electron correlation in the Fe 3d states and the hybridization between the Fe 3d and Pt 5d states. By comparing the experimental valence band structure with the theoretical density of states, the strong electron correlation in the Fe 3d states modifies the valence band electronic structure of the L1{sub 0} ordered FePt thin film through the Fe 3d-Pt 5d hybridization. These results strongly suggest that the strong electron correlation effect in the Fe 3d states and the Fe 3d-Pt 5d hybridization as well as the spin-orbit interaction in the Pt 5d states play important roles in the perpendicular MCA for L1{sub 0}-FePt.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-07-25
Publisher Place United States
Journal Applied Physics Letters
Volume Number 109
Issue Number 4


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