Phase Separation Induced by Orbital Degrees of Freedom in Models for Manganites with Jahn-Teller Phonons

Details Phase Separation Induced by Orbital Degrees of Freedom in Models for Manganites with Jahn-Teller Phonons Phase Separation Induced by Orbital Degrees of Freedom in Models for Manganites with Jahn-Teller Phonons

1998-07-09

arxiv.org/abs/cond-mat/9807149v3

Physics

Condensed Matter

Strongly Correlated Electrons

Accepted for publication in Phys. Rev. Letters, revised version of the paper, 5 pages, Revtex, with 4 figures embedded

Scientific paper

10.1103/PhysRevLett.81.5612

The two-orbital Kondo model with classical Jahn-Teller phonons is studied using Monte Carlo techniques. The observed phase diagram is rich, and includes a novel regime of phase separation induced by the orbital degrees of freedom. Experimental consequences of our results are discussed. In addition, the optical conductivity $\sigma(\omega)$ of the model is presented. It is shown to have several similarities with experimental measurements for manganites.

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