Speaker
Lauren Hayward Sierens
(University of Waterloo)
Description
We present a theory that describes the pseudogap regime of the hole-doped cuprate superconductors by incorporating the competing effects of superconducting and charge density wave orders into six-dimensional degrees of freedom on a two-dimensional lattice [Science 343, 1336 (2014)]. Using Monte Carlo simulations, we calculate the charge order correlations and diamagnetic susceptibility [PRB 90, 094515 (2014)] associated with this O(6) model. We demonstrate that the structure factors calculated using our theory agree qualitatively with recent X-ray scattering experiments on hole-doped YBa$_2$Cu$_3$O$_{6+x}$ for a wide range of temperatures about the superconducting transition. We also study the effects of incorporating into our model interlayer coupling and disorder [PRB 92, 174505 (2015)]. In the presence of disorder, we find that our theory can reproduce experimental structure factors in the zero temperature limit.
Author
Lauren Hayward Sierens
(University of Waterloo)
Co-authors
Dr
Andrew Achkar
(University of Waterloo)
Prof.
David Hawthorn
(University of Waterloo)
Ms
Laimei Nie
(Stanford University)
Prof.
Roger Melko
(University of Waterloo)
Prof.
Steven Kivelson
(Stanford University)
Prof.
Subir Sachdev
(Harvard University)
