Abstract
We investigate in underdoped cuprates possible coexistence of the superconducting order at zero momentum and pair density wave (PDW) at momentum Q = (π, π) in the presence of a Néel order. By symmetry, the d-wave uniform singlet pairing dS0 can coexist with the d-wave triplet PDW dTQ, and the p-wave singlet PDW pQ can coexist with the p-wave uniform triplet pT0. At half filling, we find that the novel pSQ+ pT0 state is energetically more favorable than the dS0 + dTQ state. At finite doping, however, the dS0 + dTQ state is more favorable. In both types of states, the variational triplet parameters dTQ and pT0 are of secondary significance. Our results point to a fully symmetric Z2 quantum spin liquid with spinon Fermi surface in proximity to the Néel order at zero doping, which may not be adiabatically connected to the d-wave singlet superconductivity at finite doping with intertwining d-wave triplet PDW fluctuations and spin moment fluctuations. The results are obtained by variational quantum Monte Carlo simulations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.