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  Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal

Osterhoudt, G. B., Diebel, L. K., Gray, M. J., Yang, X., Stanco, J., Huang, X., et al. (2019). Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal. Nature Materials, 18(5), 471-475. doi:10.1038/s41563-019-0297-4.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-89F2-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-89FB-8
Genre: Journal Article

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 Creators:
Osterhoudt, Gavin B.1, Author
Diebel, Laura K.1, Author
Gray, Mason J.1, Author
Yang, Xu1, Author
Stanco, John1, Author
Huang, Xiangwei2, Author              
Shen, Bing1, Author
Ni, Ni1, Author
Moll, Philip J. W.2, Author              
Ran, Ying1, Author
Burch, Kenneth S.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Microstructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_2466701              

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 Abstract: Broadband, efficient and fast conversion of light to electricity is crucial for sensing and clean energy. The bulk photovoltaic effect (BPVE) is a second-order nonlinear optical effect that intrinsically converts light into electrical current. Here, we demonstrate a large mid-infrared BPVE in microscopic devices of the Weyl semimetal TaAs. This discovery results from combining recent developments in Weyl semimetals, focused-ion beam fabrication and theoretical works suggesting a connection between BPVE and topology. We also present a detailed symmetry analysis that allows us to separate the shift current response from photothermal effects. The magnitude and wavelength range of the assigned shift current may impact optical detectors, clean energy and topology, and demonstrate the utility of Weyl semimetals for practical applications.

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Language(s): eng - English
 Dates: 2019-05-052019-05-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000465199900018
DOI: 10.1038/s41563-019-0297-4
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Title: Nature Materials
  Abbreviation : Nat. Mater.
Source Genre: Journal
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Publ. Info: London, UK : Nature Pub. Group
Pages: - Volume / Issue: 18 (5) Sequence Number: - Start / End Page: 471 - 475 Identifier: ISSN: 1476-1122
CoNE: https://pure.mpg.de/cone/journals/resource/111054835734000