title: Fermi-surface-free superconductivity in underdoped (Bi,Pb)(Sr,La)2CuO(6+δ) (Bi2201).
abstract: Fermi-surface-free superconductivity arises when the superconducting order pulls down spectral weight from a band that is completely above the Fermi energy in the normal state. We show that this can arise in hole-doped cuprates when a competing order causes a reconstruction of the Fermi surface. The change in Fermi surface topology is accompanied by a characteristic rise in the spectral weight. Our results support the presence of a trisected superconducting dome, and suggest that superconductivity is responsible for stabilizing the (π,π) magnetic order at higher doping.
authors.affiliation: Department of Physics, Northeastern University, Boston.
authors.forename: Peter
authors.initials: P
authors.lastname: Mistark
authors.affiliation: Department of Physics, Northeastern University, Boston.
authors.forename: Hasnain
authors.initials: H
authors.lastname: Hafiz
authors.affiliation: Department of Physics, Northeastern University, Boston.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Markiewicz
authors.affiliation: Department of Physics, Northeastern University, Boston.
authors.forename: Arun
authors.initials: A
authors.lastname: Bansil