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Enhanced superconductivity in atomically thin TaS2

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Enhanced superconductivity in atomically thin TaS2

dc.contributor.author	Navarro Moratalla, Efrén
dc.contributor.author	Island, J.O.
dc.contributor.author	Mañas Valero, Samuel
dc.contributor.author	Pinilla Cienfuegos, Elena
dc.contributor.author	Castellanos-Gomez, A.
dc.contributor.author	Quereda, J.
dc.contributor.author	Rubio-Bollinger, G.
dc.contributor.author	Chirolli, L.
dc.contributor.author	Silva-Guillén, J.A.
dc.contributor.author	Agraït, N.
dc.contributor.author	Steele, G.A.
dc.contributor.author	Guinea, F.
dc.contributor.author	Van der Zant, H. S. J.
dc.contributor.author	Coronado Miralles, Eugenio
dc.date.accessioned	2016-03-22T16:46:34Z
dc.date.available	2016-03-22T16:46:34Z
dc.date.issued	2016
dc.identifier.citation	Navarro Moratalla, Efrén Island, J.O. Mañas Valero, Samuel Pinilla Cienfuegos, Elena Castellanos-Gomez, A. Quereda, J. Rubio-Bollinger, G. Chirolli, L. Silva-Guillén, J.A. Agraït, N. Steele, G.A. Guinea, F. Van der Zant, H.S.J. Coronado Miralles, Eugenio 2016 Enhanced superconductivity in atomically thin TaS2 Nature Communications 7 11043
dc.identifier.uri	http://hdl.handle.net/10550/51952
dc.description.abstract	The ability to exfoliate layered materials down to the single layer limit has presented the opportunity to understand how a gradual reduction in dimensionality affects the properties of bulk materials. Here we use this top-down approach to address the problem of superconductivity in the two-dimensional limit. The transport properties of electronic devices based on 2H tantalum disulfide flakes of different thicknesses are presented. We observe that superconductivity persists down to the thinnest layer investigated (3.5 nm), and interestingly, we find a pronounced enhancement in the critical temperature from 0.5 to 2.2 K as the layers are thinned down. In addition, we propose a tight-binding model, which allows us to attribute this phenomenon to an enhancement of the effective electron-phonon coupling constant. This work provides evidence that reducing the dimensionality can strengthen superconductivity as opposed to the weakening effect that has been reported in other 2D materials so far.
dc.language.iso	eng
dc.relation.ispartof	Nature Communications, 2016, vol. 7, num. 11043
dc.subject	Ciència dels materials
dc.subject	Superconductivitat
dc.title	Enhanced superconductivity in atomically thin TaS2
dc.type	journal article	es_ES
dc.date.updated	2016-03-22T16:46:34Z
dc.identifier.doi	10.1038/ncomms11043
dc.identifier.idgrec	110036
dc.rights.accessRights	open access	es_ES