NMR evidence for inhomogeneous nematic fluctuations in
Journal Article
·
· Physical Review Letters
- Univ. of California, Davis, CA (United States)
- IFW Dresden, Dresden (Germany)
- Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Minnesota, Minneapolis, MN (United States)
We present evidence for nuclear spin-lattice relaxation driven by glassy nematic fluctuations in isovalent P-doped BaFe2As2 single crystals. Both the 75As and 31P 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. Finally, these results suggest that glassy nematic dynamics are a common phenomenon in the ironbased superconductors.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of California, Davis, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- FG52-09NA29464; AC02-76SF00515; SC0012336; AC52-06NA25396; NA0001842
- OSTI ID:
- 1255258
- Alternate ID(s):
- OSTI ID: 1241398; OSTI ID: 1261079; OSTI ID: 1343601
- Report Number(s):
- LA-UR-15-28205; SLAC-PUB-16595; PRLTAO
- Journal Information:
- Physical Review Letters, Vol. 116, Issue 10; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 31 works
Citation information provided by
Web of Science
Web of Science
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