TY - JOUR
T1 - Unconventional Disorder Effects in Correlated Superconductors
AU - Gastiasoro, Maria N.
AU - Bernardini, Fabio
AU - Andersen, Brian M.
N1 - Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/12/15
Y1 - 2016/12/15
N2 - We study the effects of disorder on unconventional superconductors in the presence of correlations, and explore a novel correlated disorder paradigm dominated by strong deviations from standard Abrikosov-Gor'kov theory due to generation of local bound states and cooperative impurity behavior driven by Coulomb interactions. Specifically we explain under which circumstances magnetic disorder acts as a strong poison destroying high-Tc superconductivity at the sub-1% level, and when nonmagnetic disorder, counterintuitively, hardly affects the unconventional superconducting state while concomitantly inducing an inhomogeneous full-volume magnetic phase. Recent experimental studies of Fe-based superconductors have discovered that such unusual disorder behavior seems to be indeed present in those systems.
AB - We study the effects of disorder on unconventional superconductors in the presence of correlations, and explore a novel correlated disorder paradigm dominated by strong deviations from standard Abrikosov-Gor'kov theory due to generation of local bound states and cooperative impurity behavior driven by Coulomb interactions. Specifically we explain under which circumstances magnetic disorder acts as a strong poison destroying high-Tc superconductivity at the sub-1% level, and when nonmagnetic disorder, counterintuitively, hardly affects the unconventional superconducting state while concomitantly inducing an inhomogeneous full-volume magnetic phase. Recent experimental studies of Fe-based superconductors have discovered that such unusual disorder behavior seems to be indeed present in those systems.
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U2 - 10.1103/PhysRevLett.117.257002
DO - 10.1103/PhysRevLett.117.257002
M3 - Article
C2 - 28036210
AN - SCOPUS:85006237334
SN - 0031-9007
VL - 117
JO - Physical review letters
JF - Physical review letters
IS - 25
M1 - 257002
ER -