Phase separation induced by orbital degrees of freedom in models for manganites with Jahn-Teller phonons

Authors
Yunoki, S Moreo, A Dagotto, E
Citation
S. Yunoki et al., Phase separation induced by orbital degrees of freedom in models for manganites with Jahn-Teller phonons, PHYS REV L, 81(25), 1998, pp. 5612-5615
Citations number
32
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
81
Issue
25
Year of publication
1998
Pages
5612 - 5615
Database
ISI
SICI code
0031-9007(199812)81:25<5612:PSIBOD>2.0.ZU;2-Y
Abstract
The 2-orbital Kondo model with classical Jahn-Teller phonons is studied usi ng Monte Carlo techniques. The observed phase diagram is rich and includes a novel regime of phase separation induced by the orbital degrees of freedo m. Experimental consequences of our results are discussed. In addition, the optical conductivity sigma(omega) of the model is presented. It is shown t o have several similarities with experimental measurements for manganites.