title: Imaging and control of surface magnetization domains in a magnetoelectric antiferromagnet.
abstract: We report the direct observation of surface magnetization domains of the magnetoelectric Cr(2)O(3) using photoemission electron microscopy with magnetic circular dichroism contrast and magnetic force microscopy. The domain pattern is strongly affected by the applied electric field conditions. Zero-field cooling results in an equal representation of the two domain types, while electric-field cooling selects one dominant domain type. These observations confirm the existence of surface magnetization, required by symmetry in magnetoelectric antiferromagnets.
authors.affiliation: Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA.
authors.forename: Ning
authors.initials: N
authors.lastname: Wu
authors.forename: Xi
authors.initials: X
authors.lastname: He
authors.forename: Aleksander L
authors.initials: AL
authors.lastname: Wysocki
authors.forename: Uday
authors.initials: U
authors.lastname: Lanke
authors.forename: Takashi
authors.initials: T
authors.lastname: Komesu
authors.forename: Kirill D
authors.initials: KD
authors.lastname: Belashchenko
authors.forename: Christian
authors.initials: C
authors.lastname: Binek
authors.forename: Peter A
authors.initials: PA
authors.lastname: Dowben