Electronic Bound States in the Continuum in a 2D Metal
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arXiv
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| Format: | Preprint |
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2024
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| author | Thinel, Morgan Turkel, Simon Rossi, Sebastian E. Koay, Christie S. Chica, Daniel G. Huang, Xiong Holbrook, Madisen Devarakonda, Aravind Nashabeh, Luca M. Georgescu, Alexandru B. Roy, Xavier Zhu, Xiaoyang Pasupathy, Abhay N. Queiroz, Raquel |
| author_facet | Thinel, Morgan Turkel, Simon Rossi, Sebastian E. Koay, Christie S. Chica, Daniel G. Huang, Xiong Holbrook, Madisen Devarakonda, Aravind Nashabeh, Luca M. Georgescu, Alexandru B. Roy, Xavier Zhu, Xiaoyang Pasupathy, Abhay N. Queiroz, Raquel |
| contents | Bound states in the continuum (BICs) are quantum states that remain localized despite existing within a continuum of extended, delocalized states. They defy conventional wave theories and could be instrumental for quantum technologies that rely on the precise control of quantum states. While optical BICs have been realized in photonic systems, achieving electronic bound states in a metallic background remains an ongoing challenge. Here, we observe two defect states that remain localized within the metallic continuum of Pd5AlI2, a two-dimensional van der Waals metal. The emergence of these states is a manifestation of the hopping interference in the Pd5AlI2 lattice. This interference results in a (quasi) flat band and spatially localized eigenstates that are orthogonal to the metallic continuum thus avoiding hybridization with extended states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_19227 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Electronic Bound States in the Continuum in a 2D Metal Thinel, Morgan Turkel, Simon Rossi, Sebastian E. Koay, Christie S. Chica, Daniel G. Huang, Xiong Holbrook, Madisen Devarakonda, Aravind Nashabeh, Luca M. Georgescu, Alexandru B. Roy, Xavier Zhu, Xiaoyang Pasupathy, Abhay N. Queiroz, Raquel Materials Science Strongly Correlated Electrons Bound states in the continuum (BICs) are quantum states that remain localized despite existing within a continuum of extended, delocalized states. They defy conventional wave theories and could be instrumental for quantum technologies that rely on the precise control of quantum states. While optical BICs have been realized in photonic systems, achieving electronic bound states in a metallic background remains an ongoing challenge. Here, we observe two defect states that remain localized within the metallic continuum of Pd5AlI2, a two-dimensional van der Waals metal. The emergence of these states is a manifestation of the hopping interference in the Pd5AlI2 lattice. This interference results in a (quasi) flat band and spatially localized eigenstates that are orthogonal to the metallic continuum thus avoiding hybridization with extended states. |
| title | Electronic Bound States in the Continuum in a 2D Metal |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2410.19227 |