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arXiv · 1901.01437

Robustness of topologically sensitive harmonic generation in laser-driven linear chains

Helena Drüeke·Dieter Bauer
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Abstract

A huge difference in the harmonic yield from the two topological phases of finite, dimerizing linear chains in laser fields has recently been observed in all-electron time-dependent density functional simulations [D. Bauer, K.K. Hansen, Phys. Rev. Lett. 120, 177401 (2018)]. In this work, we explore the robustness of the effect concerning the size of the chains, a continuous transition between the two topological phases, and disorder. A high robustness of both the degeneracy of the edge states in the topologically non-trivial phase and of the pronounced destructive interference causing a dip in the harmonic spectra in the topologically trivial phase is observed.

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Helena Drüeke, Dieter Bauer. 2019-01-05. Robustness of topologically sensitive harmonic generation in laser-driven linear chains. https://doi.org/10.1103/physreva.99.053402

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