Phys. Rev. Lett. 81, 5612–5615 (1998)Phase Separation Induced by Orbital Degrees of Freedom in Models for Manganites with Jahn-Teller PhononsReceived 13 July 1998; published in the issue dated 21 December 1998 The 2-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 σ(ω) of the model is presented. It is shown to have several similarities with experimental measurements for manganites. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.5612
DOI:
10.1103/PhysRevLett.81.5612
PACS:
71.10.-w, 75.10.-b, 75.30.Kz
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