Optical properties of two dimensional Dirac Weyl materials with a flatband
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916134047973376 |
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| author | Ye, Li-Li Han, Chen-Di Lai, Ying-Cheng |
| author_facet | Ye, Li-Li Han, Chen-Di Lai, Ying-Cheng |
| contents | The emergence of a flat band in Dirac-Weyl materials offers new possibilities for electronic transitions, leading to stronger interaction with light. As a result, the optical conductivity can be significantly enhanced in these flat-band materials as compared with graphene, making them potentially better candidates for optical sensing and modulation. Recently, a comprehensive theory for the optical conductivity of a spectrum of flat-band Dirac-Weyl materials has been developed, with explicit formulas for both the real and imaginary parts of the conductivity derived through two independent approaches. This Perspective offers a review of the development. An understanding of the optical properties of the flat-band Dirac-Weyl materials paves the way for optical device applications in the terahertz-frequency domain. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_14238 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optical properties of two dimensional Dirac Weyl materials with a flatband Ye, Li-Li Han, Chen-Di Lai, Ying-Cheng Optics Materials Science Quantum Physics The emergence of a flat band in Dirac-Weyl materials offers new possibilities for electronic transitions, leading to stronger interaction with light. As a result, the optical conductivity can be significantly enhanced in these flat-band materials as compared with graphene, making them potentially better candidates for optical sensing and modulation. Recently, a comprehensive theory for the optical conductivity of a spectrum of flat-band Dirac-Weyl materials has been developed, with explicit formulas for both the real and imaginary parts of the conductivity derived through two independent approaches. This Perspective offers a review of the development. An understanding of the optical properties of the flat-band Dirac-Weyl materials paves the way for optical device applications in the terahertz-frequency domain. |
| title | Optical properties of two dimensional Dirac Weyl materials with a flatband |
| topic | Optics Materials Science Quantum Physics |
| url | https://arxiv.org/abs/2402.14238 |