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arXiv · 2203.05001

Dynamics of topological defects after a photo-induced melting of a charge-density wave

Andrei E. Tarkhov·A. V. Rozhkov·Alfred Zong·Anshul Kogar·Nuh Gedik·Boris V. Fine
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Abstract

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 LaTe$_3$.

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Andrei E. Tarkhov, A. V. Rozhkov, Alfred Zong, Anshul Kogar, Nuh Gedik, Boris V. Fine. 2022-03-09. Dynamics of topological defects after a photo-induced melting of a charge-density wave. https://doi.org/10.1103/physrevb.106.l121109

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