Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

1 Publication
Investigation of orbital ordering in La7/8Sr1/8MnO3 by means of x-ray linear dichroism at the Mn L edge
Kuepper, K.; Bondino, F.; Prince, K. C.; Zangrando, M.; Zacchigna, M.; Takacs, A. F.; Matteucci, M.; Parmigiani, F.; Winiarski, A.; Galakhov, V. R.; Mukovskii, Y. M.; Neumann, M.;
We have investigated for the first time the orbital ordering in a three dimensional colossal magneto resistance manganite, namely
La7/8Sr1/8MnO3, by applying soft x-ray linear dichroism (XLD) to the Mn L edge [1]. 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 previous results obtained by means of resonant x-ray scattering at the Mn K edge and different exchange interaction models.
[1] K. Kuepper et al., J. Phys. Chem. B 109, 15667 (2005)
Keywords: LaMnO3, La1-xSrxMnO3, colossal magneto resistance, orbital ordering, x-ray linear dichroism
  • Poster
    DPG - spring meeting of the Division Condensed Matter, 26.-31.03.2006, Dresden, Germany

Publ.-Id: 8375