Photogeneration Dynamics of a Soliton Pair in Polyacetylene
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概要
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Dynaunical process of tlae formation of a soliton pair froraa 21 photogenerated electrota-hole pairin polyacetylene is sttrdied ntrmericarlly by adopting tlte SSH Hautailtonian. A xveak local disorderis introduced in order to trigger the forrnation. Starting f'rouaa an itaitial configttr?rtion witla anelectron at the bottotn of the corrdtnction b?tnd and 21 ltole at the top of' tlae valence lvand, separ'attedby tlae Peierls gap, tlae tiuaae dependent Schr6ndinger eqtration f'or' tlae electron wave f'trnctionsand tlae eqtration of znotiora for the lattice displ;rceta?etats 2116 solved nntrtauerically. Af'ten- severatltmnif'ortaa oscillations of the lattice systern art tlae eaxrly stage, ;x latrge distortion corresporading toa pa?r of' a soluton arrtd 2111 auutu-solnton develops f'rotau a poit?t which is deterraained byr the locatiotaand t.ype of the disorder. In sonxe cases, txvo solitons [1111 in ojcposite directions, le?rving breatlaerlike oscillatiotas behind, and in other c?rses tlaey fornaa 21 botrttd state etaaitting acoustic latticevibrationarl n'nodes.
- 社団法人日本物理学会の論文
- 1998-11-15
著者
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Ono Yoshiyuki
Department Of Physicis Toho University
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HIRANO Yukio
Department of Physics, Toho University
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Hirano Yukio
Department Of Physics Toho University
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