Vergés, J. A.Martín Mayor, VíctorBrey, L.2023-06-202023-06-202002-04-010031-900710.1103/PhysRevLett.88.136401https://hdl.handle.net/20.500.14352/60321© 2002 American Physical Society. We are grateful to F. Guinea, J. L. Alonso, and S. Fratini for discussions. Financial support is acknowledged from Grants No. PB96-0085 (MEC, Spain) and CAM-07N/0008/2001 (Madrid, Spain). V. M-M. is partially supported by E.C. Contract No. HPMF-CT2000-00450.We present a single-orbital double-exchange model, coupled with cooperative phonons (the so called breathing modes of the oxygen octahedra in manganites). The model is studied with Monte Carlo simulations. For a finite range of doping and coupling constants, a first-order metal-insulator phase transition is found, which coincides with the paramagnetic-ferromagnetic phase transition.engjournal articlehttp://dx.doi.org/10.1103/PhysRevLett.88.136401https://journals.aps.orgopen access53Double-exchange systemsPhase-separationDoped manganitesChargeLa(1-x)Sr(x)MnO(3)PerovskitesDiagramModelOrder.Física-Modelos matemáticos