title: Broken particle-hole symmetry at atomically flat a-axis YBa2Cu3O7-delta interfaces.
authors.affiliation: Physics Department, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. davidson@tasc.infm.it
authors.forename: Bruce A
authors.initials: BA
authors.lastname: Davidson
authors.forename: Revaz
authors.initials: R
authors.lastname: Ramazashvili
authors.forename: Simon
authors.initials: S
authors.lastname: Kos
authors.forename: James N
authors.initials: JN
authors.lastname: Eckstein