Photoinduced Metallic Properties of One-Dimensional Strongly Correlated Electron Systems
作者： Nobuya Maeshima , Kenji Yonemitsu
DOI: 10.1143/JPSJ.74.2671
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摘要: 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 Hubbard model at half filling by exact diagonalization method. It is found that, Mott insulator phase, state has large spectral weights including Drude weight below gap. As consequence, above gap markedly reduced. These results imply that metallic induced photoexcitation. A comparison between hole-doped shows photoexcitation similar to chemical doping.
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