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Quantized circular photogalvanic effect in Weyl semimetals

Author

Listed:
  • Fernando de Juan

    (University of California
    Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia)
    Rudolf Peierls Centre for Theoretical Physics)

  • Adolfo G. Grushin

    (University of California)

  • Takahiro Morimoto

    (University of California)

  • Joel E Moore

    (University of California
    Lawrence Berkeley National Laboratory)

Abstract

The circular photogalvanic effect (CPGE) is the part of a photocurrent that switches depending on the sense of circular polarization of the incident light. It has been consistently observed in systems without inversion symmetry and depends on non-universal material details. Here we find that in a class of Weyl semimetals (for example, SrSi2) and three-dimensional Rashba materials (for example, doped Te) without inversion and mirror symmetries, the injection contribution to the CPGE trace is effectively quantized in terms of the fundamental constants e, h, c and with no material-dependent parameters. This is so because the CPGE directly measures the topological charge of Weyl points, and non-quantized corrections from disorder and additional bands can be small over a significant range of incident frequencies. Moreover, the magnitude of the CPGE induced by a Weyl node is relatively large, which enables the direct detection of the monopole charge with current techniques.

Suggested Citation

  • Fernando de Juan & Adolfo G. Grushin & Takahiro Morimoto & Joel E Moore, 2017. "Quantized circular photogalvanic effect in Weyl semimetals," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15995
    DOI: 10.1038/ncomms15995
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    Cited by:

    1. Bing Cheng & Di Cheng & Tao Jiang & Wei Xia & Boqun Song & Martin Mootz & Liang Luo & Ilias E. Perakis & Yongxin Yao & Yanfeng Guo & Jigang Wang, 2024. "Chirality manipulation of ultrafast phase switches in a correlated CDW-Weyl semimetal," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Zhongqiang Chen & Hongsong Qiu & Xinjuan Cheng & Jizhe Cui & Zuanming Jin & Da Tian & Xu Zhang & Kankan Xu & Ruxin Liu & Wei Niu & Liqi Zhou & Tianyu Qiu & Yequan Chen & Caihong Zhang & Xiaoxiang Xi &, 2024. "Defect-induced helicity dependent terahertz emission in Dirac semimetal PtTe2 thin films," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    3. Yoonseok Hwang & Jun-Won Rhim & Bohm-Jung Yang, 2021. "Geometric characterization of anomalous Landau levels of isolated flat bands," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    4. Longjun Xiang & Hao Jin & Jian Wang, 2024. "Quantifying the photocurrent fluctuation in quantum materials by shot noise," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    5. Kotaro Ogawa & Natsuki Kanda & Yuta Murotani & Ryusuke Matsunaga, 2024. "Programmable generation of counterrotating bicircular light pulses in the multi-terahertz frequency range," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    6. Wei-Chi Chiu & Guoqing Chang & Gennevieve Macam & Ilya Belopolski & Shin-Ming Huang & Robert Markiewicz & Jia-Xin Yin & Zi-Jia Cheng & Chi-Cheng Lee & Tay-Rong Chang & Feng-Chuan Chuang & Su-Yang Xu &, 2023. "Causal structure of interacting Weyl fermions in condensed matter systems," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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