Hidden, one-dimensional, strongly nested, and almost half-filled Fermi surface in Ba${}_2$CuO${}_{3+y}$ superconductors

Paul Worm, Motoharu Kitatani, Jan M. Tomczak +2

All previous cuprate superconductors display a set of common features: (i) vicinity to a Cu 3$d^9$ configuration; (ii) separated CuO${}_2$ planes; (iii) superconductivity for dopin…