title: Effects of disordered Ru substitution in BaFe2As2: possible realization of superdiffusion in real materials.
abstract: An unexpected insensitivity of the Fermi surface to impurity scattering is found in Ru substituted BaFe(2)As(2) from first-principles theory, offering a natural explanation of the unusual resilience of transport and superconductivity to a high level of disordered substitution in this material. This robustness is shown to originate from a coherent interference of correlated on-site and intersite impurity scattering, similar in spirit to the microscopic mechanism of superdiffusion in one dimension. Our result also demonstrates a strong substitution dependence of the Fermi surface and carrier concentration and provides a resolution to current discrepancies in recent photoelectron spectroscopy. These effects offer a natural explanation of the diminishing long-range magnetic, orbital, and superconducting orders with high substitution.
authors: Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors: Limin
authors: L
authors: Wang
authors: Tom
authors: T
authors: Berlijn
authors: Yan
authors: Y
authors: Wang
authors: Chia-Hui
authors: CH
authors: Lin
authors: P J
authors: PJ
authors: Hirschfeld
authors: Wei
authors: W
authors: Ku