Kuepper K, Bondino F, Prince K C, Zangrando M, Zacchigna M, Takás A F, Crainic T, Matteucci M, Parmigiani F, Winiarski A, Galakhov V R, Mukovskii Ya M, Neumann M
J Phys Chem B. 2005 Aug 25;109(33):15667-70. doi: 10.1021/jp052762s.
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.
