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  Light-induced anomalous Hall effect in graphene

McIver, J. W., Schulte, B., Stein, F.-U., Matsuyama, T., Jotzu, G., Meier, G., et al. (2019). Light-induced anomalous Hall effect in graphene. Nature Physics. doi:10.1038/s41567-019-0698-y.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-7841-E Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1841-7
Genre: Journal Article

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https://arxiv.org/abs/1811.03522 (Preprint)
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https://dx.doi.org/10.1038/s41567-019-0698-y (Publisher version)
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News & views article "Transient wave function twist" by Justin C.W. Song

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 Creators:
McIver, J. W.1, Author              
Schulte, B.1, Author              
Stein, F.-U.1, Author              
Matsuyama, T.2, Author              
Jotzu, G.1, Author              
Meier, G.2, Author              
Cavalleri, A.1, 3, Author              
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Ultrafast Electronics, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074323              
3Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              

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 Abstract: Many non-equilibrium phenomena have been discovered or predicted in optically driven quantum solids1. Examples include light-induced superconductivity2,3 and Floquet-engineered topological phases4,5,6,7,8. These are short-lived effects that should lead to measurable changes in electrical transport, which can be characterized using an ultrafast device architecture based on photoconductive switches9. Here, we report the observation of a light-induced anomalous Hall effect in monolayer graphene driven by a femtosecond pulse of circularly polarized light. The dependence of the effect on a gate potential used to tune the Fermi level reveals multiple features that reflect a Floquet-engineered topological band structure4,5, similar to the band structure originally proposed by Haldane10. This includes an approximately 60 meV wide conductance plateau centred at the Dirac point, where a gap of equal magnitude is predicted to open. We find that when the Fermi level lies within this plateau the estimated anomalous Hall conductance saturates around 1.8 ± 0.4 e2/h.

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Language(s): eng - English
 Dates: 2019-05-142019-09-192019-11-042019
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: arXiv: 1811.03522
DOI: 10.1038/s41567-019-0698-y
 Degree: -

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Project name : We acknowledge H. Aoki, L. Mathey, M. Nuske, A. Rubio, S.A. Sato, M.A. Sentef and P. Tang for fruitful discussions and B. Fiedler, B. Höhling, E. König and M. Volkmann for technical support. The research leading to these results received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement no. 319286 (QMAC). J.W.M. received funding from the Alexander von Humboldt Foundation.
Grant ID : 319286
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850