TY - JOUR
T1 - Robust nodal d-wave spectrum in simulations of strongly fluctuating competing order in underdoped cuprates
AU - Atkinson, W. A.
AU - Bazak, D. J.
AU - Andersen, Brian Møller
PY - 2012/12/27
Y1 - 2012/12/27
N2 - We resolve an existing discrepancy between convincing evidence for competing order in underdoped cuprates and spectroscopic data consistent with a homogeneous d-wave superconductor in the very same compounds. Specifically, we show that fluctuations of the competing order generate strongly inhomogeneous states whose spectra are almost indistinguishable from the pure d-wave superconductor. This is in contrast to the commonly studied case of homogeneously coexisting order, which typically generates a reconstructed Fermi surface with closed Fermi pockets. The signatures of the fluctuating competing order can be found mainly in a splitting of the antinodal band, and, for strong magnetic order, in small induced nodal gaps similar to those found in recent experiments on underdoped La2-xSrxCuO4.
AB - We resolve an existing discrepancy between convincing evidence for competing order in underdoped cuprates and spectroscopic data consistent with a homogeneous d-wave superconductor in the very same compounds. Specifically, we show that fluctuations of the competing order generate strongly inhomogeneous states whose spectra are almost indistinguishable from the pure d-wave superconductor. This is in contrast to the commonly studied case of homogeneously coexisting order, which typically generates a reconstructed Fermi surface with closed Fermi pockets. The signatures of the fluctuating competing order can be found mainly in a splitting of the antinodal band, and, for strong magnetic order, in small induced nodal gaps similar to those found in recent experiments on underdoped La2-xSrxCuO4.
U2 - 10.1103/PhysRevLett.109.267004
DO - 10.1103/PhysRevLett.109.267004
M3 - Journal article
C2 - 23368606
SN - 0031-9007
VL - 109
SP - 267004
JO - Physical Review Letters
JF - Physical Review Letters
IS - 26
ER -