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  Light-induced anomalous Hall effect in massless Dirac fermion systems and topological insulators with dissipation

Sato, S., Tang, P., Sentef, M. A., de Giovannini, U., Hübener, H., & Rubio, A. (2019). Light-induced anomalous Hall effect in massless Dirac fermion systems and topological insulators with dissipation.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-B312-E Version Permalink: http://hdl.handle.net/21.11116/0000-0003-B313-D
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1905.12981.pdf (Preprint), 2MB
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https://arxiv.org/abs/1905.12981 (Preprint)
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 Creators:
Sato, S.1, 2, Author              
Tang, P.2, Author              
Sentef, M. A.3, Author              
de Giovannini, U.2, Author              
Hübener, H.2, 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              
3Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
4Center for Computational Quantum Physics (CCQ), The Flatiron Institute, ou_persistent22              

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 Abstract: Employing the quantum Liouville equation with phenomenological dissipation, we investigate the transport properties of massless and massive Dirac fermion systems that mimics graphene and topological insulators, respectively. The massless Dirac fermion system does not show an intrinsic Hall effect, but it shows a Hall current under the presence of circularly-polarized laser fields as a nature of a optically-driven nonequilibrium state. Based on the microscopic analysis, we find that the light-induced Hall effect mainly originates from the imbalance of photocarrier distribution in momentum space although the emergent Floquet-Berry curvature also has a non-zero contribution. We further compute the Hall transport property of the massive Dirac fermion system with an intrinsic Hall effect in order to investigate the interplay of the intrinsic topological contribution and the extrinsic light-induced population contribution. As a result, we find that the contribution from the photocarrier population imbalance becomes significant in the strong field regime and it overcomes the intrinsic contribution. This finding clearly demonstrates that intrinsic transport properties of materials can be overwritten by external driving and may open a way to ultrafast optical-control of transport properties of materials.

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Language(s): eng - English
 Dates: 2019-05-30
 Publication Status: Published online
 Pages: 21
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 Table of Contents: -
 Rev. Method: No review
 Identifiers: arXiv: 1905.12981
 Degree: -

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