
Article
Persistent correlation between superconductivity and antiferromagnetic fluctuations near a nematic quantum critical point in FeSe1−xSx
Ames Laboratory Accepted Manuscripts
Publication Date
7-27-2018
Department
Ames Laboratory; Physics and Astronomy
OSTI ID+
1464474
Report Number
IS-J 9716
DOI
10.1103/PhysRevB.98.020507
Journal Title
Physical Review B
Abstract
We present 77Se-NMR measurements on FeSe1−xSx samples with sulfur content x=0%, 9%, 15%, and 29%. Twinned nematic domains are observed in the NMR spectrum for all samples except x=29%. The NMR spin-lattice relaxation rate shows that antiferromagnetic (AFM) fluctuations are initially enhanced between x=0% and x=9%, but are strongly suppressed for higher x values. The observed behavior of the AFM fluctuations parallels the superconducting transition temperature Tc in these materials, providing strong evidence for the primary importance of AFM fluctuations for superconductivity, despite the presence of nematic quantum criticality in the FeSe1−xSx system.
DOE Contract Number(s)
AC02-07CH11358
Language
en
Publisher
Iowa State University Digital Repository, Ames IA (United States)
Disciplines
Citation Information
P. Wiecki, Khusboo Rana, A. E. Böhmer, Y. Lee, et al.. "Persistent correlation between superconductivity and antiferromagnetic fluctuations near a nematic quantum critical point in FeSe1−xSx" Vol. 98 Iss. 2 (2018) p. 020507 Available at: http://works.bepress.com/paul_canfield/150/