Abstract
We show how the onset of a non-Slater antiferromagnetic ordering in a correlated material can be detected by optical spectroscopy. Using dynamical mean-field theory we identify two distinctive features: The antiferromagnetic ordering is associated with an enhanced spectral weight above the optical gap, and well-separated spin-polaron peaks emerge in the optical spectrum. Both features are indeed observed in LaSrMnO [A. Gössling et al., Phys. Rev. B 77, 035109 (2008)].
2 More- Received 31 December 2011
DOI:https://doi.org/10.1103/PhysRevB.85.085124
©2012 American Physical Society