TY - JOUR
T1 - Impurity effects on the superconducting transition temperatures of Fe pnictides and superconducting symmetry of the order parameter
AU - Sato, M.
AU - Kobayashi, Y.
AU - Satomi, S.
AU - Kawamata, T.
AU - Itoh, M.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - We focus on effects of nonmagnetic impurities on the superconducting transition temperatures Tc and point out, using various experimental evidences obtained for LnFe1-y MyAsO 0.89-xF0.11+x (Ln=La and Nd; M=Co, Ni, Mn, Ru) systems, that the sign reversal of the order parameters Δ pointed out theoretically at the early stage of the study does not exist between disconnected Fermi surfaces around Γ and M points. The results imply that a new pairing mechanism different from the spin-fluctuation exchange and possibly related to the orbital degrees of freedom, should be considered seriously.
AB - We focus on effects of nonmagnetic impurities on the superconducting transition temperatures Tc and point out, using various experimental evidences obtained for LnFe1-y MyAsO 0.89-xF0.11+x (Ln=La and Nd; M=Co, Ni, Mn, Ru) systems, that the sign reversal of the order parameters Δ pointed out theoretically at the early stage of the study does not exist between disconnected Fermi surfaces around Γ and M points. The results imply that a new pairing mechanism different from the spin-fluctuation exchange and possibly related to the orbital degrees of freedom, should be considered seriously.
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U2 - 10.1088/1742-6596/400/2/022104
DO - 10.1088/1742-6596/400/2/022104
M3 - Conference article
AN - SCOPUS:84873622477
VL - 400
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - PART 2
M1 - 022104
T2 - 26th International Conference on Low Temperature Physics, LT 2011
Y2 - 10 August 2011 through 17 August 2011
ER -