Why Does Undoped FeSe Become A High Tc Superconductor Under Pressure?

Simple item page
dc.creatorImai, T.
dc.creatorAhilan, K.
dc.creatorNing, F. L.
dc.creatorMcQueen, T. M.
dc.creatorCava, R. J.
dc.date2009-02-23
dc.date2009-04-03
dc.date.accessioned2026-07-07T13:10:55Z
dc.date.available2026-07-07T13:10:55Z
dc.descriptionUnlike the parent phases of the iron-arsenide high Tc superconductors, undoped FeSe is not magnetically ordered and exhibits superconductivity with Tc~9K. Equally surprising is the fact that applied pressure dramatically enhances the modest Tc to ~37K. We investigate the electronic properties of FeSe using 77Se NMR to search for the key to the superconducting mechanism. We demonstrate that the electronic properties of FeSe are very similar to those of electron-doped FeAs superconductors, and that antiferromagnetic spin fluctuations are strongly enhanced near Tc. Furthermore, applied pressure enhances spin fluctuations. Our findings suggest a link between spin fluctuations and the superconducting mechanism in FeSe.
dc.descriptionAccepted for publication in Phys. Rev. Lett. after minor revision
dc.identifierhttps://arxiv.org/abs/0902.3832
dc.identifierhttp://arxiv.org/abs/0902.3832
dc.identifierPhys. Rev. Lett. 102 (2009) 177005.
dc.identifierdoi:10.1103/PhysRevLett.102.177005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229133
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleWhy Does Undoped FeSe Become A High Tc Superconductor Under Pressure?
dc.typetext

Files

Collections

arXiv