Amperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866914721272168448 |
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| author | Andolina, Gian Marcello De Pasquale, Antonella Pellegrino, Francesco Maria Dimitri Torre, Iacopo Koppens, Frank H. L. Polini, Marco |
| author_facet | Andolina, Gian Marcello De Pasquale, Antonella Pellegrino, Francesco Maria Dimitri Torre, Iacopo Koppens, Frank H. L. Polini, Marco |
| contents | Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-electron interactions (EEEIs) mediated by a transverse gauge field. Originally introduced in the context of quantum spin liquids and high-Tc superconductors, Amperean superconductivity has been recently proposed to occur at temperatures on the order of 1-20 K in two-dimensional, parabolic-band, electron gases embedded inside deep sub-wavelength optical cavities. In this work, we first generalize the microscopic theory of cavity-induced Amperean superconductivity to the case of graphene and then argue that this superconducting state cannot be achieved in the deep sub-wavelength regime. In the latter regime, indeed, a cavity induces only EEEIs between density fluctuations rather than the current-current interactions which are responsible for Amperean pairing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_10371 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Amperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material Andolina, Gian Marcello De Pasquale, Antonella Pellegrino, Francesco Maria Dimitri Torre, Iacopo Koppens, Frank H. L. Polini, Marco Superconductivity Mesoscale and Nanoscale Physics Strongly Correlated Electrons Amperean superconductivity is an exotic phenomenon stemming from attractive effective electron-electron interactions (EEEIs) mediated by a transverse gauge field. Originally introduced in the context of quantum spin liquids and high-Tc superconductors, Amperean superconductivity has been recently proposed to occur at temperatures on the order of 1-20 K in two-dimensional, parabolic-band, electron gases embedded inside deep sub-wavelength optical cavities. In this work, we first generalize the microscopic theory of cavity-induced Amperean superconductivity to the case of graphene and then argue that this superconducting state cannot be achieved in the deep sub-wavelength regime. In the latter regime, indeed, a cavity induces only EEEIs between density fluctuations rather than the current-current interactions which are responsible for Amperean pairing. |
| title | Amperean superconductivity cannot be induced by deep subwavelength cavities in a two-dimensional material |
| topic | Superconductivity Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2210.10371 |