TY - JOUR
T1 - Inelastic neutron and x-ray scattering as probes of the sign structure of the superconducting gap in iron pnictides
AU - Maier, Thomas A.
AU - Graser, Siegfried
AU - Hirschfeld, Peter J.
AU - Scalapino, Douglas J.
PY - 2011/6/13
Y1 - 2011/6/13
N2 - Neutron spin-flip scattering observations of a resonance in the superconducting state is often taken as evidence of an unconventional superconducting state in which the gap changes sign Δ(k+Q)=-Δ(k) for momentum transfers Q which play an important role in the pairing. Recently questions regarding this identification for the Fe-pnictide superconductors have been raised and it has been suggested that Δ(k+Q)=Δ(k). Here we propose that inelastic neutron or x-ray scattering measurements of the spectral weight of a phonon of momentum Q can distinguish between these two pairing scenarios.
AB - Neutron spin-flip scattering observations of a resonance in the superconducting state is often taken as evidence of an unconventional superconducting state in which the gap changes sign Δ(k+Q)=-Δ(k) for momentum transfers Q which play an important role in the pairing. Recently questions regarding this identification for the Fe-pnictide superconductors have been raised and it has been suggested that Δ(k+Q)=Δ(k). Here we propose that inelastic neutron or x-ray scattering measurements of the spectral weight of a phonon of momentum Q can distinguish between these two pairing scenarios.
UR - https://www.scopus.com/pages/publications/79961136004
U2 - 10.1103/PhysRevB.83.220505
DO - 10.1103/PhysRevB.83.220505
M3 - Article
AN - SCOPUS:79961136004
SN - 1098-0121
VL - 83
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 220505
ER -