TY - JOUR
T1 - Magnetic fluctuations in pair density wave superconductors
AU - Christensen, Morten Holm
AU - Jacobsen, Henrik
AU - Maier, Thomas
AU - Andersen, Brian Møller
PY - 2016/4/18
Y1 - 2016/4/18
N2 - Pair-density-wave superconductivity constitutes a novel electronic condensate proposed to be realized in certain unconventional superconductors. Establishing its potential existence is important for our fundamental understanding of superconductivity in correlated materials. Here we compute the dynamical magnetic susceptibility in the presence of a pair-density-wave ordered state and study its fingerprints on the spin-wave spectrum including the neutron resonance. In contrast to the standard case of d-wave superconductivity, we show that the pair-density-wave phase exhibits neither a spin gap nor a magnetic resonance peak, in agreement with a recent neutron scattering experiment on underdoped La1.905Ba0.095CuO4 [Z. Xu et al., Phys. Rev. Lett. 113, 177002 (2014)].
AB - Pair-density-wave superconductivity constitutes a novel electronic condensate proposed to be realized in certain unconventional superconductors. Establishing its potential existence is important for our fundamental understanding of superconductivity in correlated materials. Here we compute the dynamical magnetic susceptibility in the presence of a pair-density-wave ordered state and study its fingerprints on the spin-wave spectrum including the neutron resonance. In contrast to the standard case of d-wave superconductivity, we show that the pair-density-wave phase exhibits neither a spin gap nor a magnetic resonance peak, in agreement with a recent neutron scattering experiment on underdoped La1.905Ba0.095CuO4 [Z. Xu et al., Phys. Rev. Lett. 113, 177002 (2014)].
U2 - 10.1103/physrevlett.116.167001
DO - 10.1103/physrevlett.116.167001
M3 - Journal article
C2 - 27152819
SN - 0031-9007
VL - 116
JO - Physical Review Letters
JF - Physical Review Letters
M1 - 167001
ER -