6 February 2009 Femtosecond carrier dynamics in quasi-one-dimensional topological compounds
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Abstract
Due to the recent progress of material science, quasi-one-dimensional (1D) materials provide an opportunity for investigating the influence of topology and dimensionality on their optical and electrical properties. In this study, we report the phase transition properties of such quasi-1D compounds by utilizing an ultrafast optical spectroscopy. Photoexcited nonequilibrium carrier dynamics yield characteristic features around the phase transition temperatures. We also discuss the toplogical effects on the phase coherence of correlated carriers by using both polarization and excitation energy dependences of the transient signals and their spatial characteristics.
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Y. Toda, K. Shimatake, S. Tanda, J. Onoe, "Femtosecond carrier dynamics in quasi-one-dimensional topological compounds", Proc. SPIE 7214, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIII, 72141G (6 February 2009); doi: 10.1117/12.807333; https://doi.org/10.1117/12.807333
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