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arXiv · 1704.06776

Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal

Y. Kawakami·Y. Yoneyama·T. Amano·H. Itoh·K. Yamamoto·Y. Nakamura·H. Kishida·T. Sasaki·S. Ishihara·Y. Tanaka·K. Yonemitsu·S. Iwai
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Abstract

Polarization selectivity of light-field-induced charge localization was investigated in an organic metal alpha-(BEDT-TTF)2I3 with a triangular lattice. Dependences of transient reflectivity spectra on polarizations of the 7-fs pump and probe lights indicate that a short-range charge order (CO) is efficiently induced from the metallic phase for the pump polarization perpendicular to the 1010-type CO axis. Numerical solution of a time-dependent Schrodinger equation clarified that the 1010-CO is induced by field-induced re-distribution of charges cooperating with competing inter-site Coulomb repulsions in the triangular lattice.

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Y. Kawakami, Y. Yoneyama, T. Amano, H. Itoh, K. Yamamoto, Y. Nakamura, H. Kishida, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, S. Iwai. 2017-04-22. Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal. https://doi.org/10.1103/physrevb.95.201105

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