title: Anomalous electronic structure and pseudogap effects in Nd1.85Ce0.15CuO4.
abstract: We report a high-resolution angle-resolved photoemission spectroscopic study of the electron-doped ( n-type) cuprate superconductor Nd1.85Ce0.15CuO4. We observe regions along the Fermi surface where the near- E(F) intensity is suppressed and the spectral features are broad in a manner reminiscent of the high-energy "pseudogap" in the underdoped p-type (hole doped) cuprates. However, instead of occurring near the (pi,0) region, as in the p-type materials, this pseudogap falls near the intersection of the underlying Fermi surface with the antiferromagnetic Brillouin zone boundary.
authors.affiliation: Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA.
authors.forename: N P
authors.initials: NP
authors.lastname: Armitage
authors.forename: D H
authors.initials: DH
authors.lastname: Lu
authors.forename: C
authors.initials: C
authors.lastname: Kim
authors.forename: A
authors.initials: A
authors.lastname: Damascelli
authors.forename: K M
authors.initials: KM
authors.lastname: Shen
authors.forename: F
authors.initials: F
authors.lastname: Ronning
authors.forename: D L
authors.initials: DL
authors.lastname: Feng
authors.forename: P
authors.initials: P
authors.lastname: Bogdanov
authors.forename: Z X
authors.initials: ZX
authors.lastname: Shen
authors.forename: Y
authors.initials: Y
authors.lastname: Onose
authors.forename: Y
authors.initials: Y
authors.lastname: Taguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Tokura
authors.forename: P K
authors.initials: PK
authors.lastname: Mang
authors.forename: N
authors.initials: N
authors.lastname: Kaneko
authors.forename: M
authors.initials: M
authors.lastname: Greven