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Photocurrents in Weyl semimetals

Chan, Ching-Kit and Lindner, Netanel H. and Refael, Gil and Lee, Patrick A. (2017) Photocurrents in Weyl semimetals. Physical Review B, 95 (4). Art. No. 041104. ISSN 2469-9950. http://resolver.caltech.edu/CaltechAUTHORS:20170119-140307907

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Abstract

The generation of photocurrent in an ideal two-dimensional Dirac spectrum is symmetry forbidden. In sharp contrast, we show that three-dimensional Weyl semimetals can generically support significant photocurrents due to the combination of inversion symmetry breaking and finite tilts of the Weyl spectra. Symmetry properties, chirality relations, and various dependencies of this photovoltaic effect on the system and the light source are explored in detail. Our results suggest that noncentrosymmetric Weyl materials can be advantageously applied to room temperature detections of mid- and far-infrared radiations.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevB.95.041104DOIArticle
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.041104PublisherArticle
https://arxiv.org/abs/1607.07839arXivDiscussion Paper
Additional Information:© 2017 American Physical Society. Received 13 August 2016; revised manuscript received 16 November 2016; published 13 January 2017. We thank Nuh Gedik for very helpful discussions. P.A.L. acknowledges the support from DOE Grant No. DE-FG02-03-ER46076 and the Simons Fellows Program. G.R. acknowledges the supported from NSF through DMR-1410435. N.H.L. acknowledges supports from I-Core, the Israeli excellence center Circle of Light, the People Programme (Marie Curie Actions) of the European Union's Seventh Framework under REA Grant Agreement No. 631696 and financial support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (Grant Agreement No. 639172). P.A.L. and C.-K.C. thank the hospitality of the CMT group at Caltech where this work was carried out. G.R. thanks the Aspen Center for Physics where a part of the work was done.
Group:IQIM, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-03-ER46076
Simons FoundationUNSPECIFIED
NSFDMR-1410435
I-CORE Program of the Planning and Budgeting CommitteeUNSPECIFIED
Israeli Excellence Center Circle of LightUNSPECIFIED
Marie Curie Fellowship631696
European Research Council (ERC)639172
Record Number:CaltechAUTHORS:20170119-140307907
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170119-140307907
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73558
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Jan 2017 23:09
Last Modified:19 Jan 2017 23:09

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