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pro vyhledávání: '"Jürß, Hannah"'
Formation of the solid-state high-order harmonic generation plateau through destructive interference
In frequently studied two-band models for solid-state high-harmonic generation, interband harmonics in principle can range from the minimum to the maximum bandgap. However, it is known that a laser-intensity dependent cutoff exists that may be well b
Externí odkaz:
http://arxiv.org/abs/2211.06244
Autor:
Jürß, Hannah, Bauer, Dieter
Edge states play a major role in the electron dynamics of topological insulators as they are the only conducting part in such materials. In this work, we consider the Haldane model for a 2D topological insulator, subjected to an intense laser field.
Externí odkaz:
http://arxiv.org/abs/2205.12810
Autor:
Jürß, Hannah, Bauer, Dieter
The high-order harmonic generation in finite topological nanoribbons is investigated using a tight-binding description. The ribbons consist of hexagons and are almost one-dimensional. Two edge states emerge at the short edges of the ribbon after a ga
Externí odkaz:
http://arxiv.org/abs/2103.14671
Autor:
Jürß, Hannah, Bauer, Dieter
The generation of high-order harmonics in finite, hexagonal nanoribbons is simulated. Ribbons with armchair and zig-zag edges are investigated by using a tight-binding approach with only nearest neighbor hopping. By turning an alternating on-site pot
Externí odkaz:
http://arxiv.org/abs/2101.02961
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-Hamil
Externí odkaz:
http://arxiv.org/abs/2007.13434
Autor:
Jürß, Hannah, Bauer, Dieter
Publikováno v:
Phys. Rev. A 102, 043105 (2020)
Recent studies in high-harmonic spectroscopy of condensed matter mainly focused on the bulk of the system under consideration. In this work, we investigate the response of thin, hexagonal nanoribbons to an intense laser pulse that is linearly polariz
Externí odkaz:
http://arxiv.org/abs/2006.16037
Autor:
Jürß, Hannah, Bauer, Dieter
Publikováno v:
Phys. Rev. B 99, 195428 (2019)
Su-Schrieffer-Heeger (SSH) chains are the simplest model systems that display topological edge states. We calculate high-harmonic spectra of SSH chains that are coupled to an external laser field of a frequency much smaller than the band gap. We find
Externí odkaz:
http://arxiv.org/abs/1902.04120