Self-consistent polaron states in the presence of simultaneous local and nonlocal exciton-phonon coupling

A canonical transformation method originally proposed by Munn and Silbey is used to diagonalize partially a model Hamiltonian which incorporates both local and nonlocal exciton phonon coupling. At the heart of the method is a secular elimination principle which poses a difficult self-consistency pro...

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Main Authors: Brown, David W., Zhao, Yang, Lindenberg, Katja
其他作者: School of Materials Science & Engineering
格式: Article
語言:English
出版: 2011
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在線閱讀:https://hdl.handle.net/10356/93780
http://hdl.handle.net/10220/6772
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機構: Nanyang Technological University
語言: English
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總結:A canonical transformation method originally proposed by Munn and Silbey is used to diagonalize partially a model Hamiltonian which incorporates both local and nonlocal exciton phonon coupling. At the heart of the method is a secular elimination principle which poses a difficult self-consistency problem. We take a numerical approach, solving the general self-consistency problem to desired accuracy. Among the differences between our findings and those of the original work are polaron binding energies much larger and Debye Waller factors much smaller than originally anticipated.