Effects of Nematic Fluctuations on the Elastic Properties of Iron Arsenide Superconductors

TitleEffects of Nematic Fluctuations on the Elastic Properties of Iron Arsenide Superconductors
Publication TypeJournal Article
Year of Publication2010
AuthorsFernandes RM, VanBebber LH, Bhattacharya S, Chandra P, Keppens V, Mandrus D, McGuire MA, Sales BC, Sefat AS, Schmalian J
Journal TitlePhysical Review Letters
Volume105
Pages157003
Date Published10/04
ISBN Number0031-9007
Accession NumberISI:000282426400017
Keywordsstate
Abstract

We demonstrate that the changes in the elastic properties of the FeAs systems, as seen in our resonant ultrasound spectroscopy data, can be naturally understood in terms of fluctuations of emerging nematic degrees of freedom. Both the softening of the lattice in the normal, tetragonal phase as well as its hardening in the superconducting phase are consistently described by our model. Our results confirm the view that structural order is induced by magnetic fluctuations.

URL<Go to ISI>://000282426400017http://prl.aps.org/pdf/PRL/v105/i15/e157003
DOI10.1103/Physrevlett.105.157003
Alternate JournalPhys Rev Lett