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  Nonlinear electric conductivity and THz-induced charge transport in graphene

Sato, S., & Rubio, A. (2021). Nonlinear electric conductivity and THz-induced charge transport in graphene. New Journal of Physics, 23: 063047. doi:10.1088/1367-2630/ac03d0.

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Sato_2021_New_J._Phys._23_063047.pdf (Publisher version), 3MB
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Sato_2021_New_J._Phys._23_063047.pdf
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Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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2021
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© The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft

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https://dx.doi.org/10.1088/1367-2630/ac03d0 (Publisher version)
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https://arxiv.org/abs/2103.11969 (Preprint)
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 Creators:
Sato, S.1, 2, Author              
Rubio, A.2, 3, 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              
3Center for Computational Quantum Physics (CCQ), Flatiron Institute, ou_persistent22              

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 Abstract: Based on the quantum master equation approach, the nonlinear electric conductivity of graphene is investigated under static electric fields for various chemical potential shifts. The simulation results show that, as the field strength increases, the effective conductivity is firstly suppressed, reflecting the depletion of effective carriers due to the large displacement in the Brillouin zone caused by the strong field. Then, as the field strength exceeds 1 MV m−1, the effective conductivity increases, overcoming the carrier depletion via the Landau–Zener tunneling process. Based on the nonlinear behavior of the conductivity, the charge transport induced by few-cycle THz pulses is studied to elucidate the ultrafast control of electric current in matter.

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Language(s): eng - English
 Dates: 2021-05-152021-04-062021-05-212021-06-17
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1367-2630/ac03d0
arXiv: 2103.11969
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Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 23 Sequence Number: 063047 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666