title: Coexistence of competing orders with two energy gaps in real and momentum space in the high temperature superconductor Bi_{2}Sr_{2-x}La_{x}CuO_{6+delta}.
abstract: Through a combined scanning tunneling microscopy and angle-resolved photoemission spectroscopy study, we report the observation of two distinct gaps (a small and a large gap) that coexist both in real space and in the antinodal region of momentum space, below the superconducting transition temperature (T_{c}) of Bi_{2}Sr_{2-x}La_{x}CuO_{6+delta}. We show that the small gap is associated with superconductivity. The large-gap persists above T_{c}, and seems linked to observed charge ordering. We find a strong correlation between the large and small gaps suggesting that they are affected by similar physical processes.
authors.affiliation: Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA.
authors.forename: J-H
authors.initials: JH
authors.lastname: Ma
authors.forename: Z-H
authors.initials: ZH
authors.lastname: Pan
authors.forename: F C
authors.initials: FC
authors.lastname: Niestemski
authors.forename: M
authors.initials: M
authors.lastname: Neupane
authors.forename: Y-M
authors.initials: YM
authors.lastname: Xu
authors.forename: P
authors.initials: P
authors.lastname: Richard
authors.forename: K
authors.initials: K
authors.lastname: Nakayama
authors.forename: T
authors.initials: T
authors.lastname: Sato
authors.forename: T
authors.initials: T
authors.lastname: Takahashi
authors.forename: H-Q
authors.initials: HQ
authors.lastname: Luo
authors.forename: L
authors.initials: L
authors.lastname: Fang
authors.forename: H-H
authors.initials: HH
authors.lastname: Wen
authors.forename: Ziqiang
authors.initials: Z
authors.lastname: Wang
authors.forename: H
authors.initials: H
authors.lastname: Ding
authors.forename: V
authors.initials: V
authors.lastname: Madhavan