title: (75)As NMR study of antiferromagnetic fluctuations in Ba(Fe(1-x)Ru(x))(2)As(2).
abstract: The evolution of (75)As NMR parameters with composition and temperature was probed in the Ba(Fe(1-x)Ru(x))(2)As(2) system where Fe is replaced by isovalent Ru. While the Ru end member was found to be a conventional Fermi liquid, the composition (x = 0.5) corresponding to the highest T(c) (20 K) in this system shows an upturn in the (75)As [Formula: see text] below about 80 K, evidencing the presence of antiferromagnetic (AFM) fluctuations. These results are similar to those obtained in another system with isovalent substitution, BaFe(2)(As(1-x)P(x))(2) (Nakai et al 2010 Phys. Rev. Lett. 105 107003) and point to a possible role of AFM fluctuations in driving superconductivity.
authors: Department of Physics, IIT Bombay, Powai, Mumbai 400076, India.
authors: Tusharkanti
authors: T
authors: Dey
authors: P
authors: P
authors: Khuntia
authors: A V
authors: AV
authors: Mahajan
authors: Shilpam
authors: S
authors: Sharma
authors: A
authors: A
authors: Bharathi