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  Creating stable Floquet-Weyl semimetals by laser-driving of 3D Dirac materials

Hübener, H., Sentef, M. A., de Giovannini, U., Kemper, A. F., & Rubio, A. (2017). Creating stable Floquet-Weyl semimetals by laser-driving of 3D Dirac materials. Nature Communications, 8: 13940. doi:10.1038/ncomms13940.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-321F-E Version Permalink: http://hdl.handle.net/21.11116/0000-0003-A08B-B
Genre: Journal Article

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 Creators:
Hübener, Hannes1, Author
Sentef, M. A.2, 3, Author              
de Giovannini, Umberto1, 2, Author
Kemper, Alexander F.4, Author
Rubio, A.1, 5, 6, Author              
Affiliations:
1Nano-Bio Spectroscopy Group and ETSF, Universidad del País Vasco, CFM CSIC-UPV/EHU, 20018 San Sebastián, Spain, ou_persistent22              
2Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, ou_persistent22              
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              
4Department of Physics, North Carolina State University, Raleigh, NC 27695-8202, USA, ou_persistent22              
5Center for Free-Electron Laser Science, 22761 Hamburg, Germany, ou_persistent22              
6Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              

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Free keywords: TOPOLOGICAL INSULATOR; FERMI ARCS; ULTRAHIGH MOBILITY; CD3AS2; DISCOVERY; GRAPHENE; SURFACE; TAAS; MAGNETORESISTANCE; SUPERCONDUCTORS
 Abstract: Tuning and stabilizing topological states, such as Weyl semimetals, Dirac semimetals or topological insulators, is emerging as one of the major topics in materials science. Periodic driving of many-body systems offers a platform to design Floquet states of matter with tunable electronic properties on ultrafast timescales. Here we show by first principles calculations how femtosecond laser pulses with circularly polarized light can be used to switch between Weyl semimetal, Dirac semimetal and topological insulator states in a prototypical three-dimensional (3D) Dirac material, Na3Bi. Our findings are general and apply to any 3D Dirac semimetal. We discuss the concept of time-dependent bands and steering of Floquet–Weyl points and demonstrate how light can enhance topological protection against lattice perturbations. This work has potential practical implications for the ultrafast switching of materials properties, such as optical band gaps or anomalous magnetoresistance.

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Language(s): eng - English
 Dates: 2016-04-152016-11-152017-01-17
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1038/ncomms13940
arXiv: 1604.03399
 Degree: -

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Project name : We are grateful to Peizhe Tang for stimulating discussions and a critical reading of our manuscript and to Ashvin Vishwanath for helpful discussions. We acknowledge financial support from the European Research Council (ERC-2015-AdG-694097), Grupos Consolidados (IT578-13), Spanish grant (FIS2013-46159-C3-1-P), AFOSR Grant No. FA2386-15-1-0006 AOARD 144088, COST Action MP1306 (EUSpec). H.H. acknowledges support from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7-PEOPLE-2013-IEF project No. 622934. A.F.K. thanks the Aspen Center for Physics (supported by National Science Foundation grant PHY-1066293) for their hospitality during part of this work. M.A.S. acknowledges support by the Deutsche Forschungsgemeinschaft through the Emmy Noether programme.
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 8 Sequence Number: 13940 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723