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 LaSrMnO4 [A. Gossling et al., Phys. Rev. B 77, 035109 (2008)]. RI Capone, Massimo/A-7762-2008; Georges, Antoine/H-4855-2012

Signature of antiferromagnetic long-range order in the optical spectrum of strongly correlated electron systems

Capone, Massimo;
2012-01-01

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 LaSrMnO4 [A. Gossling et al., Phys. Rev. B 77, 035109 (2008)]. RI Capone, Massimo/A-7762-2008; Georges, Antoine/H-4855-2012
2012
85
8
1
10
085124
https://arxiv.org/abs/1112.5003
Taranto, C; Sangiovanni, G; Held, K; Capone, Massimo; Georges, A; Toschi, A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/14525
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