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Axial Higgs mode detected by quantum pathway interference in RTe3

Author

Listed:
  • Yiping Wang

    (Boston College)

  • Ioannis Petrides

    (Harvard University)

  • Grant McNamara

    (Boston College)

  • Md Mofazzel Hosen

    (Boston College)

  • Shiming Lei

    (Princeton University)

  • Yueh-Chun Wu

    (University of Massachusetts Amherst)

  • James L. Hart

    (Yale University)

  • Hongyan Lv

    (Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences)

  • Jun Yan

    (University of Massachusetts Amherst)

  • Di Xiao

    (University of Washington
    University of Washington)

  • Judy J. Cha

    (Yale University)

  • Prineha Narang

    (Harvard University)

  • Leslie M. Schoop

    (Princeton University)

  • Kenneth S. Burch

    (Boston College)

Abstract

The observation of the Higgs boson solidified the standard model of particle physics. However, explanations of anomalies (for example, dark matter) rely on further symmetry breaking, calling for an undiscovered axial Higgs mode1. The Higgs mode was also seen in magnetic, superconducting and charge density wave (CDW) systems2,3. Uncovering the vector properties of a low-energy mode is challenging, and requires going beyond typical spectroscopic or scattering techniques. Here we discover an axial Higgs mode in the CDW system RTe3 using the interference of quantum pathways. In RTe3 (R = La, Gd), the electronic ordering couples bands of equal or different angular momenta4–6. As such, the Raman scattering tensor associated with the Higgs mode contains both symmetric and antisymmetric components, which are excited via two distinct but degenerate pathways. This leads to constructive or destructive interference of these pathways, depending on the choice of the incident and Raman-scattered light polarization. The qualitative behaviour of the Raman spectra is well captured by an appropriate tight-binding model, including an axial Higgs mode. Elucidation of the antisymmetric component is direct evidence that the Higgs mode contains an axial vector representation (that is, a pseudo-angular momentum) and hints that the CDW is unconventional. Thus, we provide a means for measuring quantum properties of collective modes without resorting to extreme experimental conditions.

Suggested Citation

  • Yiping Wang & Ioannis Petrides & Grant McNamara & Md Mofazzel Hosen & Shiming Lei & Yueh-Chun Wu & James L. Hart & Hongyan Lv & Jun Yan & Di Xiao & Judy J. Cha & Prineha Narang & Leslie M. Schoop & Ke, 2022. "Axial Higgs mode detected by quantum pathway interference in RTe3," Nature, Nature, vol. 606(7916), pages 896-901, June.
  • Handle: RePEc:nat:nature:v:606:y:2022:i:7916:d:10.1038_s41586-022-04746-6
    DOI: 10.1038/s41586-022-04746-6
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    Citations

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    Cited by:

    1. Shun Akatsuka & Sebastian Esser & Shun Okumura & Ryota Yambe & Rinsuke Yamada & Moritz M. Hirschmann & Seno Aji & Jonathan S. White & Shang Gao & Yoshichika Onuki & Taka-hisa Arima & Taro Nakajima & M, 2024. "Non-coplanar helimagnetism in the layered van-der-Waals metal DyTe3," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Shuvam Sarkar & Joydipto Bhattacharya & Pampa Sadhukhan & Davide Curcio & Rajeev Dutt & Vipin Kumar Singh & Marco Bianchi & Arnab Pariari & Shubhankar Roy & Prabhat Mandal & Tanmoy Das & Philip Hofman, 2023. "Charge density wave induced nodal lines in LaTe3," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. SeongJin Kwon & Hyunjin Jung & SangJin Lee & Gil Young Cho & KiJeong Kong & ChoongJae Won & Sang-Wook Cheong & Han Woong Yeom, 2024. "Dual Higgs modes entangled into a soliton lattice in CuTe," Nature Communications, Nature, vol. 15(1), pages 1-6, December.
    4. Christian Tzschaschel & Jian-Xiang Qiu & Xue-Jian Gao & Hou-Chen Li & Chunyu Guo & Hung-Yu Yang & Cheng-Ping Zhang & Ying-Ming Xie & Yu-Fei Liu & Anyuan Gao & Damien Bérubé & Thao Dinh & Sheng-Chin Ho, 2024. "Nonlinear optical diode effect in a magnetic Weyl semimetal," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    5. Bin Hu & Hui Chen & Yuhan Ye & Zihao Huang & Xianghe Han & Zhen Zhao & Hongqin Xiao & Xiao Lin & Haitao Yang & Ziqiang Wang & Hong-Jun Gao, 2024. "Evidence of a distinct collective mode in Kagome superconductors," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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