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Cited by 328Topological Materials and Phenomena2D Materials and ApplicationsAdvanced Condensed Matter Physics

Photocurrents in Weyl semimetals

Open access
Chan, Ching-Kit, Lindner, Netanel H., Refael, Gil, Lee, Patrick A.·2017·Physical Review B
DOI 10.1103/physrevb.95.041104
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Abstract

The discovery of topological matter should be an opportunity for revolutionizing electronic devices. Nevertheless, for all their unique properties, to date there are limited feasible devices or applications based on topological materials. The work here recognizes that topological Weyl semimetal materials, through their protected gap closing and spin-orbit locking, could be used to detect low-frequency infrared radiation. Detecting infrared light electrically beyond a ten-micron wavelength is rather difficult with few ready made commercial solutions. The authors find that Weyl semimetals could provide an ideal solution for detecting mid- and far-infrared light even at room temperature. In this work, they describe the conditions of the materials to be effective photodetectors (noncentrosymmetry, doping levels etc.) and provide a detailed analysis of this photovoltaic effect.

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  • For right circularly polarized light propagating along +â, the microscopic theory predicts a photocurrent direction given by Ĵ_THY = χ_W1 k_light × ĉ.

    “Assuming RCP light propagating along +â, this theory predicts a photocurrent ( ĴTHY ) along b given by (Supplementary Information III. 4 and Supplementary Information IV.3) ĴTHY = χ W1 klight × ĉ (3)”

    From Direct optical detection of Weyl fermion chirality in a topological semimetal (2017) · cites this paper as [20]

    The Symmetry consideration section states that, in the isotropic limit, the photocurrent and the light’s Poynting vector share the same direction. That is contrary to the claimed cross-product direction, which is perpendicular to the light’s propagation; the paper does discuss circular-polarization-induced, chirality-dependent current, but does not give the attributed directional rule. (LLM, conf=0.87)

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  • It has been proposed that inversion symmetry breaking WSMs with tilted Weyl cones will be efficient generators of photocurrent and may be used as IR detectors.

    “For instance, it has been proposed that inversion symmetry breaking WSMs with tilted Weyl cones will be efficient generators of photocurrent and may be used as IR detectors (Chan et al. , 2017).”

    From Weyl and Dirac semimetals in three-dimensional solids (2018) · cites this paper as Chan et al., 2017

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Cites

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Authors
Chan, C.-K., Lindner, N. H., Refael, G., & Lee, P. A.
Affiliations
  • Massachusetts Institute of Technology (US)
  • Technion – Israel Institute of Technology (IL)
  • California Institute of Technology (US)
ORCID
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
2017-01-13
Volume
95
Issue
4
ISSN
  • 2469-9950 (ISSN-L)
  • 2469-9969
DOI
10.1103/physrevb.95.041104
OpenAlex
W2494393056
Cited by
327
References
40
Citations by year
2026: 23 · 2025: 27 · 2024: 27 · 2023: 38 · 2022: 30 · 2021: 54 · 2020: 50 · 2019: 33 · 2018: 28 · 2017: 15 · 2016: 2
FWCI
16.91
Type
journal article
Language
en
Open access
Licence
Locations
  • Physical review. B./Physical review. B (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • arXiv (Cornell University)
  • Bulletin of the American Physical Society
Funders
  • U.S. Department of Energy (DE-FG02-03-ER46076)
  • National Science Foundation (DMR-1410435)
  • European Research Council (639172)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
Keywords
Weyl semimetals, photocurrent, photodetectors, infrared detection, mid-infrared, far-infrared, photovoltaic effect, noncentrosymmetric materials, doping concentration, room-temperature photodetection

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