The temperature dependence of the electron-spin resonance linewidth in La0.95Sr0.05MnO3 has been determined and analyzed in the paramagnetic regime across the orbital ordering transition. From the temperature dependence and the anisotropy of linewidth and g-value the orbital order can be unambiguously determined via the mixing angle of the wave functions of the eg-doublet. The linewidth shows a similar evolution with temperature as resonant x-ray scattering results.
@article{arxiv.cond-mat/0306088,
title = {The Orbital Order Parameter in La0.95Sr0.05MnO3 probed by Electron Spin Resonance},
author = {J. Deisenhofer and B. I. Kochelaev and E. Shilova and A. M. Balbashov and A. Loidl and H. -A. Krug von Nidda},
journal= {arXiv preprint arXiv:cond-mat/0306088},
year = {2009}
}