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Davydov splitting of degenerate lattice modes in layer compound GaS
http://hdl.handle.net/2298/9609
http://hdl.handle.net/2298/96090f755548-854c-4681-be7c-9d1014017369
名前 / ファイル | ライセンス | アクション |
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PRB_019_1312.pdf (330.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2008-10-22 | |||||
タイトル | ||||||
タイトル | Davydov splitting of degenerate lattice modes in layer compound GaS | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | GaS, layer compound, 層状化合物, Raman scattering, ラマン散乱, far-infrared, 遠赤外, Davydov splitting, ダビドフ分裂 | |||||
資源タイプ | ||||||
資源タイプ | journal article | |||||
著者 |
Kuroda, Noritaka
× Kuroda, Noritaka× 仁科, 雄一郎 |
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別言語の著者 |
黒田, 規敬
× 黒田, 規敬× 仁科, 雄一郎 |
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内容記述 | ||||||
内容記述 | The frequency separation between the essentially degenerate in-plane TO mode and its Davydov conjugate has been observed in the layer compound GaS in a measurement of the Raman and far-infrared spectra. The relative magnitude of the frequencies of the two modes is contrary to what is expected from interlayer Van der Waals forces. Wieting and Verble have observed a similar frequency reversal in the Davydov conjugates in the spectra of MoS2 and β-GaSe. They have argued that the long-range Coulomb interaction could be responsible for this optical anomaly. Our calculation shows, however, that the effect of such interaction in the deformation-dipole model approximation can not explain the anomaly. | |||||
内容記述 | ||||||
内容記述 | 層状半導体GaSにおける面内格子振動の横波光学(TO)モードとそのダビドフ共役モードのエネルギー差に注目してラマン散乱と遠赤外吸収を測定した。結果は層間のファンデルワールス力に基づいた予想と逆であった。同様の逆転現象がGaSeでもWietingとVerbleによって報告されているが、彼らが指摘した長距離クーロン力を考慮に入れても理論的に説明できない。それに代わる要因として、本論文では層状化合物の特殊性を考察して積層欠陥の役割を提案した。 | |||||
書誌情報 |
Physical Review B 巻 19, 号 2, p. 1312-1315, 発行年 1979-01-15 |
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ISSN | ||||||
収録物識別子 | 01631829 | |||||
書誌レコードID | ||||||
収録物識別子 | AA00362255 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
関連識別子 | 10.1103/PhysRevB.19.1312 | |||||
権利 | ||||||
権利情報 | ©1979 The American Physical Society | |||||
フォーマット | ||||||
内容記述 | application/pdf | |||||
形態 | ||||||
330369 bytes | ||||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
日本十進分類法 | ||||||
主題 | 428.8 | |||||
その他の言語のタイトル | ||||||
その他のタイトル | 層状化合物GaSにおける縮退格子振動モードのダビドフ分裂 | |||||
タイトル(ヨミ) | ||||||
その他のタイトル | ソウジョウ カゴウブツ GaS ニ オケル シュクタイ コウシ シンドウ モード ノ ダビドフ ブンレツ | |||||
出版者 | ||||||
出版者 | The American Physical Society | |||||
資源タイプ | ||||||
内容記述 | 論文(Article) | |||||
資源タイプ・ローカル | ||||||
雑誌掲載論文 | ||||||
資源タイプ・NII | ||||||
Journal Article | ||||||
資源タイプ・DCMI | ||||||
text | ||||||
資源タイプ・ローカル表示コード | ||||||
01 | ||||||
URL | ||||||
内容記述 | http://link.aps.org/abstract/PRB/v19/p1312 | |||||
コメント | ||||||
黒田規敬: 熊本大学大学院自然科学研究科マテリアル工学講座・工学部マテリアル工学科 |