Phase Transition in a One-dimensional Extended Peierls-Hubbard Model with a Pulse of Oscillating Electric Field: II. Linear Behavior in Neutral-to-Ionic Transition
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- Yonemitsu Kenji
- Institute for Molecular Science Graduate University for Advanced Studies
Bibliographic Information
- Other Title
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- Phase Transition in a One-dimensional Extended Peierls-Hubbard Model with a Pulse of Oscillating Electric Field: 2. Linear Behavior in Neutral-to-Ionic Transition
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Description
Dynamics of charge density and lattice displacements after the neutral phase is photoexcited is studied by solving the time-dependent Schrödinger equation for a one-dimensional extended Peierls–Hubbard model with alternating potentials. In contrast to the ionic-to-neutral transition studied previously, the neutral-to-ionic transition proceeds in an uncooperative manner as far as the one-dimensional system is concerned. The final ionicity is a linear function of the increment of the total energy. After the electric field is turned off, the electronic state does not significantly change, roughly keeping the ionicity, even if the transition is not completed, because the ionic domains never proliferate. As a consequence, an electric field with frequency just at the linear absorption peak causes the neutral-to-ionic transition the most efficiently. These findings are consistent with the recent experiments on the mixed-stack organic charge–transfer complex, TTF–CA. We artificially modify or remove the electron–lattice coupling to discuss the origin of such differences between the two transitions.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 73 (10), 2879-2886, 2004
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204188405504
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- NII Article ID
- 110001979220
- 130004538587
- 210000105103
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- NII Book ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.2879Y
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 7121308
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed