Pressure-induced volume-collapsed tetragonal phase of CaFe2As2 as seen via neutron scattering

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dc.creatorKreyssig, A.
dc.creatorGreen, M. A.
dc.creatorLee, Y.
dc.creatorSamolyuk, G. D.
dc.creatorZajdel, P.
dc.creatorLynn, J. W.
dc.creatorBud'ko, S. L.
dc.creatorTorikachvili, M. S.
dc.creatorNi, N.
dc.creatorNandi, S.
dc.creatorLeao, J.
dc.creatorPoulton, S. J.
dc.creatorArgyriou, D. N.
dc.creatorHarmon, B. N.
dc.creatorCanfield, P. C.
dc.creatorMcQueeney, R. J.
dc.creatorGoldman, A. I.
dc.date2008-07-18
dc.date2008-10-29
dc.date.accessioned2026-07-07T10:19:58Z
dc.date.available2026-07-07T10:19:58Z
dc.descriptionRecent investigations of the superconducting iron-arsenide families have highlighted the role of pressure, be it chemical or mechanical, in fostering superconductivity. Here we report that CaFe2As2 undergoes a pressure-induced transition to a non-magnetic, volume "collapsed" tetragonal phase, which becomes superconducting at lower temperature. Spin-polarized total-energy calculations on the collapsed structure reveal that the magnetic Fe moment itself collapses, consistent with the absence of magnetic order in neutron diffraction.
dc.descriptionaccepted for publication in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0807.3032
dc.identifierhttp://arxiv.org/abs/0807.3032
dc.identifierPhys. Rev. B 78, 184517 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.184517
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174703
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titlePressure-induced volume-collapsed tetragonal phase of CaFe2As2 as seen via neutron scattering
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