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Proximity two bands Eliashberg theory of electrostatic field-effect doping in a superconducting film of MgB2

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dc.contributor.authorRomanin, D.
dc.contributor.authorUmmarino, G. A.
dc.date.accessioned2024-11-19T11:59:23Z
dc.date.available2024-11-19T11:59:23Z
dc.date.issued2019
dc.description.abstractA key aspect of field effect experiments is the possibility to induce charges on the first layers of a sample as a function of an applied gate voltage. It is therefore possible to study correlated phases of matter as a function of the induced charge density and the applied electric field. Moreover, resulting charge modulation along the direction of the applied electric field gives rise to junctions between perturbed and uneffected regions of the sample. In the framework of proximity effect Eliashberg theory, we investigate the consequence of an applied static electric field on the transition temperature of a two-band s-wave superconductor magnesium diboride. In most cases the only free parameter in the theory is the penetration depth of the applied electric field, whereas there is no freedom when the static perturbation is sufficiently weak. We come to the conclusion that the optimal way to enhance the critical temperature is to have a very thin film of magnesium diboride, otherwise the external electric field would not have substantial effect on superconductivity in this material.
dc.identifier.citationRomanin, D. Proximity two bands Eliashberg theory of electrostatic field-effect doping in a superconducting film of MgB2 / Romanin, D, Ummarino, GA // Journal of Physics Condensed Matter. - 2019. - 31. - № 2. - 10.1088/1361-648X/aaef6b
dc.identifier.doi10.1088/1361-648X/aaef6b
dc.identifier.urihttps://www.doi.org/10.1088/1361-648X/aaef6b
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85058470647&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000452420400001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/16393
dc.relation.ispartofJournal of Physics Condensed Matter
dc.titleProximity two bands Eliashberg theory of electrostatic field-effect doping in a superconducting film of MgB2
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume31
relation.isOrgUnitOfPublicationc8407a6f-7272-450d-8d99-032352c76b55
relation.isOrgUnitOfPublication.latestForDiscoveryc8407a6f-7272-450d-8d99-032352c76b55
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