Absence of Transition in Photoexcited States across the One-Dimensional CDW–SDW Phase Boundary
作者： Takao Fukui , Taku Konishi , Akira Takahashi , Masaki Aihara
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摘要: We theoretically investigate how the photoexcited states change across phase boundary between charge density wave (CDW) and spin (SDW) in one-dimensional (1D) two-dimensional (2D) Pariser–Parr–Pople models strong interaction case. In 1D case, CDW (singlet pair) droplet dominate light absorption spectrum SDW ground state region near boundary. These exhibit crossover behavior boundary, that is, of gradually increases from to region. On contrary, 2D bound holon–doublon spin) pair dominates spectrum, quantum fluctuations or singlet domain are negligible dominant even As a result, transition occurs at ...
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