Intense-laser driven electron dynamics and high-harmonic generation in solids including topological effects

• URL: http://arxiv.org/abs/2007.13434v2
• Date: Tue, 10 Nov 2020 15:12:55 GMT
• Title: Intense-laser driven electron dynamics and high-harmonic generation in solids including topological effects
• Authors: Daniel Moos, Christoph J\"ur{\ss}, Dieter Bauer
• Abstract summary: Theory for laser-driven electron dynamics and high-harmonic generation in bulk solids is formulated. In tight-binding approximation, such solids can be described by $2times 2$ Bloch-Hamiltonians.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A theory for laser-driven electron dynamics and high-harmonic generation in bulk solids with two lattice sites per unit cell of arbitrary dimension is formulated. In tight-binding approximation, such solids can be described by $2\times 2$ Bloch-Hamiltonians. Our theory is able to fully capture topological effects in high-harmonic generation by such systems because no simplifications beyond tight-binding, dipole approximation, and negligible depletion of the valence band are made. An explicit, analytical expression for the electron velocity is given. Exemplarily, the theory is applied to the Su-Schrieffer-Heeger chain and the Haldane model in strong laser fields.

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