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. doi:10.1103/PhysRevB.95.041104. https://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.
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| 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: | Institute for Quantum Information and Matter | ||||||||||||||||
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| Issue or Number: | 4 | ||||||||||||||||
| DOI: | 10.1103/PhysRevB.95.041104 | ||||||||||||||||
| Record Number: | CaltechAUTHORS:20170119-140307907 | ||||||||||||||||
| Persistent URL: | https://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: | 11 Nov 2021 05:18 |
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