High harmonic generation in two-dimensional Mott insulators

Abstract With a combination of numerical methods, including quantum Monte Carlo, exact diagonalization, and a simplified dynamical mean-field model, we consider the attosecond charge dynamics of electrons induced by strong-field laser pulses in two-dimensional Mott insulators. The necessity to go be...

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Autores principales:	Christopher Orthodoxou, Amelle Zaïr, George H. Booth
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/382a216cfa094ad88084cb20ace8819c
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spelling	oai:doaj.org-article:382a216cfa094ad88084cb20ace8819c2021-12-02T17:19:43ZHigh harmonic generation in two-dimensional Mott insulators10.1038/s41535-021-00377-82397-4648https://doaj.org/article/382a216cfa094ad88084cb20ace8819c2021-09-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00377-8https://doaj.org/toc/2397-4648Abstract With a combination of numerical methods, including quantum Monte Carlo, exact diagonalization, and a simplified dynamical mean-field model, we consider the attosecond charge dynamics of electrons induced by strong-field laser pulses in two-dimensional Mott insulators. The necessity to go beyond single-particle approaches in these strongly correlated systems has made the simulation of two-dimensional extended materials challenging, and we contrast their resulting high-harmonic emission with more widely studied one-dimensional analogues. As well as considering the photo-induced breakdown of the Mott insulating state and magnetic order, we also resolve the time and ultra-high-frequency domains of emission, which are used to characterize both the photo-transition, and the sub-cycle structure of the electron dynamics. This extends simulation capabilities and understanding of the photo-melting of these Mott insulators in two dimensions, at the frontier of attosecond non-equilibrium science of correlated materials.Christopher OrthodoxouAmelle ZaïrGeorge H. BoothNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Christopher Orthodoxou Amelle Zaïr George H. Booth High harmonic generation in two-dimensional Mott insulators
description	Abstract With a combination of numerical methods, including quantum Monte Carlo, exact diagonalization, and a simplified dynamical mean-field model, we consider the attosecond charge dynamics of electrons induced by strong-field laser pulses in two-dimensional Mott insulators. The necessity to go beyond single-particle approaches in these strongly correlated systems has made the simulation of two-dimensional extended materials challenging, and we contrast their resulting high-harmonic emission with more widely studied one-dimensional analogues. As well as considering the photo-induced breakdown of the Mott insulating state and magnetic order, we also resolve the time and ultra-high-frequency domains of emission, which are used to characterize both the photo-transition, and the sub-cycle structure of the electron dynamics. This extends simulation capabilities and understanding of the photo-melting of these Mott insulators in two dimensions, at the frontier of attosecond non-equilibrium science of correlated materials.
format	article
author	Christopher Orthodoxou Amelle Zaïr George H. Booth
author_facet	Christopher Orthodoxou Amelle Zaïr George H. Booth
author_sort	Christopher Orthodoxou
title	High harmonic generation in two-dimensional Mott insulators
title_short	High harmonic generation in two-dimensional Mott insulators
title_full	High harmonic generation in two-dimensional Mott insulators
title_fullStr	High harmonic generation in two-dimensional Mott insulators
title_full_unstemmed	High harmonic generation in two-dimensional Mott insulators
title_sort	high harmonic generation in two-dimensional mott insulators
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/382a216cfa094ad88084cb20ace8819c
work_keys_str_mv	AT christopherorthodoxou highharmonicgenerationintwodimensionalmottinsulators AT amellezair highharmonicgenerationintwodimensionalmottinsulators AT georgehbooth highharmonicgenerationintwodimensionalmottinsulators
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High harmonic generation in two-dimensional Mott insulators

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