Photoinduced Metallic Properties of One-Dimensional Strongly Correlated Electron Systems
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- Maeshima Nobuya
- Department of Chemistry, Tohoku University Institute for Molecular Science
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- Yonemitsu Kenji
- Institute for Molecular Science Graduate University for Advanced Studies
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Description
We study photoinduced optical responses of one-dimensional strongly correlated electron systems. Optical conductivity spectra are calculated for the ground and photoexcited states in a one-dimensional Hubbard model at half filling by the exact diagonalization method. It is found that, in the Mott insulator phase, the photoexcited state has large spectral weights including the Drude weight below the optical gap. As a consequence, the spectral weight above the optical gap is markedly reduced. These results imply that a metallic state is induced by photoexcitation. A comparison between the photoexcited and hole-doped states shows that photoexcitation is similar to chemical doping.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 74 (10), 2671-2674, 2005
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679164999936
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- NII Article ID
- 110002250631
- 210000105671
- 130004538981
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- NII Book ID
- AA00704814
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- BIBCODE
- 2005JPSJ...74.2671M
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- COI
- 1:CAS:528:DC%2BD2MXht12gsb%2FJ
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 7475833
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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