TY - JOUR
T1 - Nanoscale-textured superconductivity in Ru-substituted BaFe 2As 2
T2 - A challenge to a universal phase diagram for the pnictides
AU - Laplace, Y.
AU - Bobroff, J.
AU - Brouet, V.
AU - Collin, G.
AU - Rullier-Albenque, F.
AU - Colson, D.
AU - Forget, A.
PY - 2012/7/30
Y1 - 2012/7/30
N2 - 75As NMR experiments were performed in Ba(Fe 1- xRu x) 2As 2 for x = 0%-80%. Magnetic fractions and NMR line shapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) order inhomogeneously with a magnetic moment distributed from 0.9μ B to 0μ B. Superconductivity emerges at intermediate Ru doping and coexists with AF order only in the regions where moments are smaller than ∼0.3μ B, resulting in an original nanoscale texture. This situation contrasts with that of Co substitution, challenging the apparent universality of the phase diagram in Fe-based superconductors.
AB - 75As NMR experiments were performed in Ba(Fe 1- xRu x) 2As 2 for x = 0%-80%. Magnetic fractions and NMR line shapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) order inhomogeneously with a magnetic moment distributed from 0.9μ B to 0μ B. Superconductivity emerges at intermediate Ru doping and coexists with AF order only in the regions where moments are smaller than ∼0.3μ B, resulting in an original nanoscale texture. This situation contrasts with that of Co substitution, challenging the apparent universality of the phase diagram in Fe-based superconductors.
U2 - 10.1103/PhysRevB.86.020510
DO - 10.1103/PhysRevB.86.020510
M3 - Article
AN - SCOPUS:84864491546
SN - 1098-0121
VL - 86
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 020510
ER -