TY - JOUR
T1 - Nonmagnetic pair-breaking effect in La(Fe1-xZn x)AsO0.85 studied by As75 and La139 NMR and NQR
AU - Kitagawa, S.
AU - Nakai, Y.
AU - Iye, T.
AU - Ishida, K.
AU - Guo, Y. F.
AU - Shi, Y. G.
AU - Yamaura, K.
AU - Takayama-Muromachi, E.
PY - 2011/5/6
Y1 - 2011/5/6
N2 - As75 and La139 NMR and nuclear quadrupole resonance (NQR) studies on Zn-substituted LaFeAsO0.85 have been performed to microscopically investigate the Zn-impurity effects. Although superconductivity in LaFeAsO 0.85 disappears by 3% Zn substitution, we found that NMR/NQR spectra and NMR physical quantities in the normal state are hardly changed, indicating that the crystal structure and electronic states are not modified by Zn substitution. Our results suggest that the suppression of superconductivity by Zn substitution is not due to the change of the normal-state properties, but due to strong nonmagnetic pair-breaking effect to superconductivity.
AB - As75 and La139 NMR and nuclear quadrupole resonance (NQR) studies on Zn-substituted LaFeAsO0.85 have been performed to microscopically investigate the Zn-impurity effects. Although superconductivity in LaFeAsO 0.85 disappears by 3% Zn substitution, we found that NMR/NQR spectra and NMR physical quantities in the normal state are hardly changed, indicating that the crystal structure and electronic states are not modified by Zn substitution. Our results suggest that the suppression of superconductivity by Zn substitution is not due to the change of the normal-state properties, but due to strong nonmagnetic pair-breaking effect to superconductivity.
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U2 - 10.1103/PhysRevB.83.180501
DO - 10.1103/PhysRevB.83.180501
M3 - Article
AN - SCOPUS:79961063086
SN - 1098-0121
VL - 83
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 18
M1 - 180501
ER -