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

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. 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.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3]; ORCiD logo [4];  [1]; ORCiD logo [1]
  1. Boston College, Chestnut Hill, MA (United States). Dept. of Physics
  2. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  3. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy. California NanoSystems Inst.
  4. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany); Swiss Federal Inst. of Technology in Lausanne (EPFL) (Switzerland)
Publication Date:
Research Org.:
Boston College, Chestnut Hill, MA (United States); Univ. of California, Los Angeles, CA (United States); Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); European Research Council (ERC)
OSTI Identifier:
1503071
Grant/Contract Number:  
SC0018675; SC0011978; DMR-1709987; DMR-1151440; 715730
Resource Type:
Accepted Manuscript
Journal Name:
Nature Materials
Additional Journal Information:
Journal Volume: 18; Journal Issue: 5; Journal ID: ISSN 1476-1122
Publisher:
Springer Nature - Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; nonlinear optics; topological matter

Citation Formats

Osterhoudt, Gavin B., Diebel, Laura K., Gray, Mason J., Yang, Xu, Stanco, John, Huang, Xiangwei, Shen, Bing, Ni, Ni, Moll, Philip J. W., Ran, Ying, and Burch, Kenneth S. Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal. United States: N. p., 2019. Web. doi:10.1038/s41563-019-0297-4.
Osterhoudt, Gavin B., Diebel, Laura K., Gray, Mason J., Yang, Xu, Stanco, John, Huang, Xiangwei, Shen, Bing, Ni, Ni, Moll, Philip J. W., Ran, Ying, & Burch, Kenneth S. Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal. United States. doi:10.1038/s41563-019-0297-4.
Osterhoudt, Gavin B., Diebel, Laura K., Gray, Mason J., Yang, Xu, Stanco, John, Huang, Xiangwei, Shen, Bing, Ni, Ni, Moll, Philip J. W., Ran, Ying, and Burch, Kenneth S. Mon . "Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal". United States. doi:10.1038/s41563-019-0297-4. https://www.osti.gov/servlets/purl/1503071.
@article{osti_1503071,
title = {Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal},
author = {Osterhoudt, Gavin B. and Diebel, Laura K. and Gray, Mason J. and Yang, Xu and Stanco, John and Huang, Xiangwei and Shen, Bing and Ni, Ni and Moll, Philip J. W. and Ran, Ying and Burch, Kenneth S.},
abstractNote = {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. 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.},
doi = {10.1038/s41563-019-0297-4},
journal = {Nature Materials},
number = 5,
volume = 18,
place = {United States},
year = {2019},
month = {3}
}

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Cited by: 32 works
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