Fig. 5: Discrimination of CDW from PDW QPI Signature in the Pseudogap State.
From: Scattering interference signature of a pair density wave state in the cuprate pseudogap phase
a Predicted QPI signature \({\Lambda }_{{{{{{\rm{P}}}}}}}({{{{{\boldsymbol{q}}}}}},20\,{{{{{\rm{meV}}}}}})\) of pure 8\({a}_{0}\) PDW state at T = 0.09t. b Predicted \({\Lambda }_{{{{{{\rm{C}}}}}}}({{{{{\boldsymbol{q}}}}}},20\,{{{{{\rm{meV}}}}}})\) of pure 4\({a}_{0}\) CDW state at T = 0.09t. The CDW states show very different features compared to the PDW state. c Measured \(\Lambda ({{{{{\boldsymbol{q}}}}}},20\,{{{{{\rm{meV}}}}}})\) of Bi2Sr2CaDyCu2O8 (p ≈ 0.08) for the pseudogap phase at T = 1.25Tc. d Measured \(\Lambda ({{{{{\boldsymbol{q}}}}}},20\,{{{{{\rm{meV}}}}}})\) of Bi2Sr2CaDyCu2O8 (p ≈ 0.08) for the pseudogap phase at T = 1.5Tc. e The measurements of the pseudogap phase agree much better with the pure PDW scenario (a) than with the pure CDW (b).
