Magnetic field control over the axialness of Higgs modes in charge-density wave compounds
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916549358518272 |
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| author | Wulferding, Dirk Park, Jongho Tohyama, Takami Park, Seung Ryong Kim, Changyoung |
| author_facet | Wulferding, Dirk Park, Jongho Tohyama, Takami Park, Seung Ryong Kim, Changyoung |
| contents | 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$^{\circ}$ phase shift upon changing the direction of the B-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 axialness of emergent Higgs modes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08331 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magnetic field control over the axialness of Higgs modes in charge-density wave compounds Wulferding, Dirk Park, Jongho Tohyama, Takami Park, Seung Ryong Kim, Changyoung Strongly Correlated Electrons Materials Science 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$^{\circ}$ phase shift upon changing the direction of the B-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 axialness of emergent Higgs modes. |
| title | Magnetic field control over the axialness of Higgs modes in charge-density wave compounds |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2411.08331 |