We calculate the effect of a static electric field on the critical temperature of a s-wave one band superconductor in the framework of proximity effect Eliashberg theory. In the weak electrostatic field limit the theory has no free parameters while, in general, the only free parameter is the thickness of the surface layer where the electric field acts. We conclude that the best situation for increasing the critical temperature is to have a very thin film of a superconducting material with a strong increase of electron-phonon (boson) constant upon charging.
Proximity Eliashberg theory of electrostatic field-effect doping in superconducting films / Ummarino, Giovanni; Piatti, Erik; Daghero, Dario; Gonnelli, Renato; Sklyadneva, Irina Y. u.; Chulkov, E. V.; Heid, R.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 96:6(2017), pp. 064509-1-064509-9. [10.1103/PhysRevB.96.064509]
Titolo: | Proximity Eliashberg theory of electrostatic field-effect doping in superconducting films | |
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Data di pubblicazione: | 2017 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevB.96.064509 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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Ummarino_Field_effect_proximity_post_print.pdf | Articolo principale | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2678185