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Magnetic field control over the axial character of Higgs modes in charge-density wave compounds

Author

Listed:
  • Dirk Wulferding

    (Seoul National University
    Institute for Basic Science)

  • Jongho Park

    (Seoul National University
    Institute for Basic Science)

  • Takami Tohyama

    (Tokyo University of Science)

  • Seung Ryong Park

    (Incheon National University)

  • Changyoung Kim

    (Seoul National University
    Institute for Basic Science)

Abstract

Understanding how symmetry-breaking processes generate order out of disorder is among the most fundamental problems of nature. The scalar Higgs mode – a massive (quasi-) particle – is a key ingredient in these processes and emerges with the spontaneous breaking of a continuous symmetry. Its related exotic and elusive axial counterpart, a Boson with vector character, can be stabilized through the simultaneous breaking of multiple continuous symmetries. Here, we employ a magnetic field to tune the recently discovered axial Higgs-type charge-density wave amplitude modes in rare-earth tritellurides. We demonstrate a proportionality between the axial Higgs component and the applied field, and a 90° phase shift upon changing the direction of the magnetic field. This indicates that the axial character is directly related to magnetic degrees of freedom. Our approach opens up an in-situ control over the axial character of emergent Higgs modes.

Suggested Citation

  • Dirk Wulferding & Jongho Park & Takami Tohyama & Seung Ryong Park & Changyoung Kim, 2025. "Magnetic field control over the axial character of Higgs modes in charge-density wave compounds," Nature Communications, Nature, vol. 16(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55355-y
    DOI: 10.1038/s41467-024-55355-y
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