Dynamics of topological defects after photoinduced melting of a charge density wave

Article

关键词: CONTINUOUS SYMMETRY GROUP;    LONG-RANGE ORDER;    COSMOLOGICAL EXPERIMENTS;    2-DIMENSIONAL SYSTEMS;    MODEL;    DESTRUCTION;    KINETICS;   

DOI  :  10.1103/PhysRevB.106.L121109

来源: SCIE

【 摘 要 】

Charge-density-wave order in a solid can be temporarily melted by a strong laser pulse. Here, we use the discrete Gross-Pitaevskii equation on a cubic lattice to simulate the recovery of the CDW long-range phase coherence following such a pulse. Our simulations indicate that the recovery process is dramatically slowed down by the three-dimensional topological defects-CDW dislocations-created as a result of strongly nonequilibrium heating and cooling of the system. Overall, the simulated CDW recovery was found to be remarkably reminiscent of a recent pump-probe experiment in LaTe3.

【 授权许可】

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