2009/07/31 by D. I. Golosov
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Multiferroics and related materials #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.104.207207
published as Phys. Rev. Lett. vol. 104, 207207 (2010) · LaTeX-RevTeX, 5 pages, 2 figures, Phys. Rev. Lett., in press; minor corrections
arxiv created 2010/05/20 · openalex publication_date 2010/05/21 · arxiv updated 2010/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A new minimal model is constructed for the doped manganese oxides which exhibit colossal magnetoresistance, involving a broad spin-majority conduction band as well as nearly localized spin-minority electron states. A simple mean-field analysis yields a temperature-dependent hybridized band structure with suppressed carrier weight at the Fermi level. Spin stiffness is complex, indicating strong spin-wave damping. Further investigations are needed to verify the relevance of the proposed model.