Small-q phonon-mediated superconductivity in organic κ-BEDT-TTF compounds

Varelogiannis, G

dc.contributor.author	Varelogiannis, G	en
dc.date.accessioned	2014-03-01T01:18:21Z
dc.date.available	2014-03-01T01:18:21Z
dc.date.issued	2002	en
dc.identifier.issn	0031-9007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14947
dc.subject	Magnetic Field	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.other	Dimers	en
dc.subject.other	Electron scattering	en
dc.subject.other	Electronic density of states	en
dc.subject.other	Fermi surface	en
dc.subject.other	Free energy	en
dc.subject.other	Magnetic field effects	en
dc.subject.other	Magnetooptical effects	en
dc.subject.other	Phase transitions	en
dc.subject.other	Phonons	en
dc.subject.other	Superconductivity	en
dc.subject.other	Electron-phonon scattering	en
dc.subject.other	Organic superconducting materials	en
dc.title	Small-q phonon-mediated superconductivity in organic κ-BEDT-TTF compounds	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevLett.88.117005	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevLett.88.117005	en
heal.identifier.secondary	117005	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	We propose a new picture for superconductivity in kappa-(BEDT-TTF)(2) X salts arguing that small-q electron-phonon scattering dominates the pairing. We reproduce the distinct X-shaped d-wave gap reported recently by magneto-optic measurements and we argue that the softness of the momentum structure of the gap and the near degeneracy of s- and d-wave gap states may be at the origin of the experimental controversy about the gap symmetry. We show that a magnetic field applied parallel to the planes may induce extended gapless regions on the Fermi surface accounting for the experimental signatures of a Fulde-Ferrel- Larkin-Ovchinikov state and it may induce gap symmetry transitions as well.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review Letters	en
dc.identifier.doi	10.1103/PhysRevLett.88.117005	en
dc.identifier.isi	ISI:000174541700037	en
dc.identifier.volume	88	en
dc.identifier.issue	11	en
dc.identifier.spage	1170051	en
dc.identifier.epage	1170054	en