First-Principles Investigation of Magneto-Optical Kerr Effect of Metallic Mutilayers
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概要
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1NzIagneto-optical Kerr effect (IVIOKE) of rnagtaetic rnetallic rntrltila3'ers, Fe/Pt, Co/Pt, Fe/Austnd Co/Atr, is investigated based on first-principles electronic strtrcture calculations by l1SlIlgthe FLAPW metluod. The R/IOKB spectrttrn of these systetaas can be classified into txvo photon-etaergy ratages, beloxv and ?tboxze 7 eV, alotag the fitual-state character in the optical trarasition.We laax'e fotrnd Chart the spin-orlcit splitting at the noble-tauetal site dorminates the shape of theIXIOKB spectrtrna. This is becatrse the spita-orbit splitting of' tlae bands which are inx'olved intlae taaagneto-optical trartsition is tnainly deternnirued at the noble-rnetal site. Hence, the uaaostiuaaportant cozutribtrtion to the dipole-transitiora raaatrix elernents COIIICIS f'rotn the noble-tnetal site.Especially, cl to p transitiorts xvith the naaa.jority spiza art the nolcle-taaetal site are crtrcial for tlae1lxzI0KB spectrurn below 7 eV. The large spin-orlcit irateraction at the taoble-mnet;tl site indtrces tlaeorbit?rl splitting also at the 3d transition-rnetal site throtrglu the band hybridization, leading toa contribution fronaa the tmatrix eleunents at tlae 3d tratasition-rnet;tl site to the IVIOKE spectrtmtaa.It has been shown that the main intensity of' the IVIOKE sjcectrtrtm coraaes f'n'om an otrter regiouaof atotaa, where is very sensitive to the etavirontnetat.
- 社団法人日本物理学会の論文
- 1999-04-15
著者
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MIYAZAWA Hiromu
Technology Platform Research Center, SEIKO EPSON CORPORATION
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Oguchi Tamio
Department Of Engineering Physics The University Of Electro-communications
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Miyazawa H
Base Technology Research Center Seiko Epson Corporation
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MIYAZAWA Hiromu
Department of Materials Science,Hiroshima University
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