Floquet-Engineering Weyl Points and Linked Fermi Arcs from Straight Nodal Lines
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866911469129433088 |
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| author | Liu, Dongling Zhuang, Zheng-Yang Yan, Zhongbo |
| author_facet | Liu, Dongling Zhuang, Zheng-Yang Yan, Zhongbo |
| contents | Floquet engineering provides a powerful and flexible method for modifying the band structures of quantum materials. While circularly polarized light has been shown to convert curved nodal lines in three-dimensional semimetals into Weyl points, such a transformation is forbidden for an isolated straight nodal line. In this work, we uncover a dramatic shift in this paradigm when multiple straight nodal lines intersect. We observe that circularly polarized light not only gaps them into Weyl points but also induces unprecedented surface-state Fermi arcs that extend across the entire surface Brillouin zone and form a linked topological structure. These findings advance our fundamental understanding of light-driven transitions in topological semimetals and unveil a unique Weyl semimetal phase defined by linked Fermi arcs. We discuss potential exotic phenomena arising from this phase, applications of our predictions to spin-splitting antiferromagnets, and the extension of this Weyl semimetal phase to classical systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_04489 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Floquet-Engineering Weyl Points and Linked Fermi Arcs from Straight Nodal Lines Liu, Dongling Zhuang, Zheng-Yang Yan, Zhongbo Materials Science Mesoscale and Nanoscale Physics Floquet engineering provides a powerful and flexible method for modifying the band structures of quantum materials. While circularly polarized light has been shown to convert curved nodal lines in three-dimensional semimetals into Weyl points, such a transformation is forbidden for an isolated straight nodal line. In this work, we uncover a dramatic shift in this paradigm when multiple straight nodal lines intersect. We observe that circularly polarized light not only gaps them into Weyl points but also induces unprecedented surface-state Fermi arcs that extend across the entire surface Brillouin zone and form a linked topological structure. These findings advance our fundamental understanding of light-driven transitions in topological semimetals and unveil a unique Weyl semimetal phase defined by linked Fermi arcs. We discuss potential exotic phenomena arising from this phase, applications of our predictions to spin-splitting antiferromagnets, and the extension of this Weyl semimetal phase to classical systems. |
| title | Floquet-Engineering Weyl Points and Linked Fermi Arcs from Straight Nodal Lines |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.04489 |