Stability of an Electron in Deformable Lattice--Force Range,Dimensionality and Potential Barrier

• Toyozawa Yutaka

  Institute for Solid State Physics, The University of Tokyo

• Shinozuka Yuzo

  Institute for Solid State Physics, The University of Tokyo

書誌事項

タイトル別名

• Stability of an Electron in Deformable Lattice —Force Range, Dimensionality and Potential Barrier—
• Stability of an Electron in Deformable

抄録

Local and global stabilities of an electron in deformable lattice with dimensionality δ and force range index λ are studied within the adiabatic approximation. Depending on the sign of the stability index: σ=δ−2λ−2, one finds the free state to be locally stable (σ>0) with discontinuous transition to globally stable self-trapped state beyond a critical value of coupling constant g, to be marginal (σ=0) with local (as well as global) stability being governed by g, or to be locally instabilized (σ<0) towards the optimum lattice distortion which grows continuously from zero with increasing g. A phase diagram is presented for an electron interacting simultaneously with two types of phonon fields with σ\lessgtr0. The potential barrier for self-trapping of a Wannier exciton is studied with particular attention to the effect of its internal motion, and is compared with the observation.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 48 (2), 472-478, 1980

  一般社団法人 日本物理学会

キーワード

• General Physics and Astronomy

詳細情報

• CRID: 1390001204183161856
• NII論文ID: 210000088644
• NII論文ID: 110001964761
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.48.472
• BIBCODE: 1980JPSJ...48..472T
• COI: 1:CAS:528:DyaL3cXhsFensLc%3D
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 2168731
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2168731
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.48.472
• 本文言語コード: en
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