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  High-order harmonic generation in graphene: nonlinear coupling of intra and interband transitions

Sato, S., Hirori, H., Sanari, Y., Kanemitsu, Y., & Rubio, A. (2020). High-order harmonic generation in graphene: nonlinear coupling of intra and interband transitions.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-35EB-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-35EC-4
Genre: Paper

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2010.06275.pdf (Preprint), 934KB
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2010.06275.pdf
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Downloaded from arxiv.org: 2020-10-15
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2020
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https://arxiv.org/abs/2010.06275 (Preprint)
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 Creators:
Sato, S.1, 2, Author              
Hirori, H.3, Author
Sanari, Y.3, Author
Kanemitsu, Y.3, Author
Rubio, A.2, 4, Author              
Affiliations:
1Center for Computational Sciences, University of Tsukuba, ou_persistent22              
2Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
3Institute for Chemical Research, Kyoto University, ou_persistent22              
4Center for Computational Quantum Physics (CCQ), Flatiron Institute, ou_persistent22              

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 Abstract: We investigate high-order harmonic generation (HHG) in graphene with a quantum master equation approach. The simulations reproduce the observed enhancement in HHG in graphene under elliptically polarized light [N. Yoshikawa et al, Science 356, 736 (2017)]. On the basis of a microscopic decomposition of the emitted high-order harmonics, we find that the enhancement in HHG originates from an intricate nonlinear coupling between the intraband and interband transitions that are respectively induced by perpendicular electric field components of the elliptically polarized light. Furthermore, we reveal that contributions from different excitation channels destructively interfere with each other. This finding suggests a path to potentially enhance the HHG by blocking a part of the channels and canceling the destructive interference through band-gap or chemical potential manipulation.

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Language(s): eng - English
 Dates: 2020-10-13
 Publication Status: Published online
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 2010.06275
 Degree: -

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