Strain-induced Enhancement Of The Electron Energy Relaxation In Strongly Correlated Superconductors

dc.creatorGadermaier C.
dc.creatorKabanov V.V.
dc.creatorAlexandrov A.S.
dc.creatorStojchevska L.
dc.creatorMertelj T.
dc.creatorManzoni C.
dc.creatorCerullo G.
dc.creatorZhigadlo N.D.
dc.creatorKarpinski J.
dc.creatorCai Y.Q.
dc.creatorYao X.
dc.creatorToda Y.
dc.creatorOda M.
dc.creatorSugai S.
dc.creatorMihailovic D.
dc.date2014
dc.date2015-06-25T17:55:45Z
dc.date2015-11-26T14:40:51Z
dc.date2015-06-25T17:55:45Z
dc.date2015-11-26T14:40:51Z
dc.date.accessioned2018-03-28T21:47:22Z
dc.date.available2018-03-28T21:47:22Z
dc.identifier
dc.identifierPhysical Review X. American Physical Society, v. 4, n. 1, p. - , 2014.
dc.identifier21603308
dc.identifier10.1103/PhysRevX.4.011056
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84899767426&partnerID=40&md5=77caba207770a1506de6cb68616ce767
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/86898
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/86898
dc.identifier2-s2.0-84899767426
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1250583
dc.descriptionWe use femtosecond optical spectroscopy to systematically measure the primary energy relaxation rate Γ1 of photoexcited carriers in cuprate and pnictide superconductors. We find that Γ1 increases monotonically with increased negative strain in the crystallographic a axis. Generally, the Bardeen- Shockley deformation potential theorem and, specifically, pressure-induced Raman shifts reported in the literature suggest that increased negative strain enhances electron-phonon coupling, which implies that the observed direct correspondence between a and Γ1 is consistent with the canonical assignment of Γ1 to the electron-phonon interaction. The well-known nonmonotonic dependence of the superconducting critical temperature Tc on the a-axis strain is also reflected in a systematic dependence Tc on Γ1, with a distinct maximum at intermediate values (̃16 ps-1 at room temperature). The empirical nonmonotonic systematic variation of Tc with the strength of the electron-phonon interaction provides us with unique insight into the role of electron-phonon interaction in relation to the mechanism of high-Tc superconductivity as a crossover phenomenon.
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dc.languageen
dc.publisherAmerican Physical Society
dc.relationPhysical Review X
dc.rightsaberto
dc.sourceScopus
dc.titleStrain-induced Enhancement Of The Electron Energy Relaxation In Strongly Correlated Superconductors
dc.typeArtículos de revistas


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