Ultrafast Collective Dynamics in the Charge-Density-Wave Conductor K$_{0.3}$MoO$_{3}$

Yuhang Ren; Zhu'an Xu; Gunter L\U{fc}pke

doi:10.1063/1.1645785

paper

Ultrafast Collective Dynamics in the Charge-Density-Wave Conductor K $_{0.3}$ MoO $_{3}$

arXiv:cond-mat/0310357 · doi:10.1063/1.1645785

Abstract

Low-energy coherent charge-density wave excitations are investigated in blue bronze (K $_{0.3}$ MoO $_{3}$ ) and red bronze (K $_{0.33}$ MoO $_{3}$ ) by femtosecond pump-probe spectroscopy. A linear gapless, acoustic-like dispersion relation is observed for the transverse phasons with a pronounced anisotropy in K $_{0.33}$ MoO $_{3}$ . The amplitude mode exhibits a weak (optic-like) dispersion relation with a frequency of 1.67 THz at 30 K. Our results show for the first time that the time-resolved optical technique provides momentum resolution of collective excitations in strongly correlated electron systems.Low-energy coherent charge-density wave excitations are investigated in blue bronze (K $_{0.3}$ MoO $_{3}$ ) and red bronze (K $_{0.33}$ MoO $_{3}$ ) by femtosecond pump-probe spectroscopy. A linear gapless, acoustic-like dispersion relation is observed for the transverse phasons with a pronounced anisotropy in K $_{0.33}$ MoO $_{3}$ . The amplitude mode exhibits a weak (optic-like) dispersion relation with a frequency of 1.67 THz at 30 K. Our results show for the first time that the time-resolved optical technique provides momentum resolution of collective excitations in strongly correlated electron systems.

arXiv comment10 pages, 4 figures

Ultrafast Collective Dynamics in the Charge-Density-Wave Conductor K $_{0.3}$ MoO $_{3}$

Abstract

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Ultrafast Collective Dynamics in the Charge-Density-Wave Conductor K0.3​MoO3​

Abstract

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Cited by in corpus (11)

Ultrafast Collective Dynamics in the Charge-Density-Wave Conductor K $_{0.3}$ MoO $_{3}$