title: Direct investigation of orbital ordering in a colossal magnetoresistance manganite by means of X-ray linear dichroism at the Mn L edge.
abstract: We have investigated for the first time the orbital ordering in a three-dimensional colossal magnetoresistance manganite, namely La(7/8)Sr(1/8)MnO3, by applying soft X-ray linear dichroism (XLD) to the Mn L edge. We found that the cooperative Jahn-Teller distorted orthorhombic phase, which is present at a temperature of 240 K, is probably accompanied by a predominantly cross type (x2 - z2)/(y2 - z2) orbital ordering. This result is discussed in the light of different exchange interaction models.
authors.forename: K
authors.initials: K
authors.lastname: Kuepper
authors.forename: F
authors.initials: F
authors.lastname: Bondino
authors.forename: K C
authors.initials: KC
authors.lastname: Prince
authors.forename: M
authors.initials: M
authors.lastname: Zangrando
authors.forename: M
authors.initials: M
authors.lastname: Zacchigna
authors.forename: A F
authors.initials: AF
authors.lastname: Takás
authors.forename: T
authors.initials: T
authors.lastname: Crainic
authors.forename: M
authors.initials: M
authors.lastname: Matteucci
authors.forename: F
authors.initials: F
authors.lastname: Parmigiani
authors.forename: A
authors.initials: A
authors.lastname: Winiarski
authors.forename: V R
authors.initials: VR
authors.lastname: Galakhov
authors.forename: Ya M
authors.initials: YM
authors.lastname: Mukovskii
authors.forename: M
authors.initials: M
authors.lastname: Neumann