Site-Specific Stereograph of SiC(0001) Surface by Inverse Matrix Method
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概要
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The 2\pi-steradian (full hemisphere) Si 2p and C 1s photoelectron intensity angular distributions (PIADs) of the 6H-SiC(0001) surface 4° off towards the [1\bar{1}00] direction were measured. In a bulk crystal, pairs of mirrored local atomic sites with respect to the {1\bar{1}00} planes exist. Thus, a sixfold symmetry is expected for PIADs from the bulk. However, all the measured PIADs showed a threefold symmetry owing to the preferential appearance of terraces with one type of local atomic site caused by anisotropic step bunching along the [11\bar{2}0] direction. Taking the finite inelastic mean free path of photoelectrons into account, PIADs for one kind of Si and C atomic sites were successfully derived by solving an inverse matrix. Three strong forward focusing peaks due to nearby Si and C atoms have been separated from those formed by farther atoms. They showed a circular dichroism of rotational shift around the incident-light axis, which corresponds to the parallax in stereo viewing.
- 2011-01-15
著者
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MATSUSHITA Tomohiro
Japan Synchrotron Radiation Research Institute
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MATSUI Fumihiko
Materials Science, Nara Institute of Science and Technology (NAIST)
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DAIMON Hiroshi
Materials Science, Nara Institute of Science and Technology (NAIST)
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Tanaka Satoru
Department Of Anesthesiology Sapporo Medical University School Of Medicine
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Daimon Hiroshi
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Matsui Hirosuke
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Matsui Fumihiko
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Goto Kentaro
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Nishikayama Noriyuki
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Maejima Naoyuki
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Hashimoto Mie
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Hatayama Tomoaki
Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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Kato Yukako
Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
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Matsushita Tomohiro
Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
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