Terahertz detection within charge density wave state
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arXiv
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866909039266365440 |
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| author | Li, Zhi |
| author_facet | Li, Zhi |
| contents | Terahertz (THz) technology enables multi-Tbps satellite communications, but conventional semiconductor detectors suffer from fundamental performance degradation above 1 THz due to the Drude limit of free electrons. Here, we theoretically demonstrate that charge density wave (CDW) materials offer a paradigm-shifting solution via their collective electronic response. We show that a static bias electric field can continuously tune the THz resonant absorption frequency of CDW states from 0 to cutoff frequency, and enhance the nonlinear rectification current by more than one order of magnitude. This unprecedented electric-field tunability makes CDW materials ideal candidates for next-generation ultrafast THz detectors working at room-temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_12949 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Terahertz detection within charge density wave state Li, Zhi Mesoscale and Nanoscale Physics Terahertz (THz) technology enables multi-Tbps satellite communications, but conventional semiconductor detectors suffer from fundamental performance degradation above 1 THz due to the Drude limit of free electrons. Here, we theoretically demonstrate that charge density wave (CDW) materials offer a paradigm-shifting solution via their collective electronic response. We show that a static bias electric field can continuously tune the THz resonant absorption frequency of CDW states from 0 to cutoff frequency, and enhance the nonlinear rectification current by more than one order of magnitude. This unprecedented electric-field tunability makes CDW materials ideal candidates for next-generation ultrafast THz detectors working at room-temperature. |
| title | Terahertz detection within charge density wave state |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2605.12949 |