Polarization selectivity of charge localization induced by 7-fs nearly single-cycle light-field in an organic metal
arXiv:1704.06776 · doi:10.1103/PhysRevB.95.201105
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.
arXiv commentaccepted Phys. Rev. B (rapid commun.)
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