A suggested 4 x 4 structure in underdoped cuprate superconductors: a Wigner supersolid
Abstract
A wave function is proposed for the "4× 4" inhomogeneous structures observed on cuprate superconductors. It is based on the Gutzwiller-RVB technique proposed in recent papers, and consists of a Wigner solid of hole pairs embedded in a sea of d-wave spin singlet pairs. Arguments are given that the nodal quasiparticles may remain unscattered and even superconducting on such a structure.
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