title: Intrinsic inhomogeneities in manganite thin films investigated with scanning tunneling spectroscopy.
abstract: Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogeneities, which give rise to a domain structure of conducting and insulating domains at the submicrometer scale. These domains then undergo a percolation transition. The tunneling conductance and tunneling gap measured by scanning tunneling spectroscopy were used to distinguish and visualize these domains.
authors.affiliation: I. Physikalisches Institut, Universitaet Goettingen, Bunsenstrasse 9, 37073 Goettingen, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Becker
authors.forename: C
authors.initials: C
authors.lastname: Streng
authors.forename: Y
authors.initials: Y
authors.lastname: Luo
authors.forename: V
authors.initials: V
authors.lastname: Moshnyaga
authors.forename: B
authors.initials: B
authors.lastname: Damaschke
authors.forename: N
authors.initials: N
authors.lastname: Shannon
authors.forename: K
authors.initials: K
authors.lastname: Samwer