NMR Evidence for Inhomogeneous Nematic Fluctuations in BaFe2 (As1-x Px)2

A. P. Dioguardi, T. Kissikov, C. H. Lin, K. R. Shirer, M. M. Lawson, H. J. Grafe, J. H. Chu, I. R. Fisher, R. M. Fernandes, N. J. Curro

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


We present evidence for nuclear spin-lattice relaxation driven by glassy nematic fluctuations in isovalent P-doped BaFe2As2 single crystals. Both the As75 and P31 sites exhibit a stretched-exponential relaxation similar to the electron-doped systems. By comparing the hyperfine fields and the relaxation rates at these sites we find that the As relaxation cannot be explained solely in terms of magnetic spin fluctuations. We demonstrate that nematic fluctuations couple to the As nuclear quadrupolar moment and can explain the excess relaxation. These results suggest that glassy nematic dynamics are a common phenomenon in the iron-based superconductors.

Original languageEnglish (US)
Article number107202
JournalPhysical review letters
Issue number10
StatePublished - Mar 10 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.


Dive into the research topics of 'NMR Evidence for Inhomogeneous Nematic Fluctuations in BaFe2 (As1-x Px)2'. Together they form a unique fingerprint.

Cite this