Anti-Jahn-Teller polaron in LaMnO3

Article

关键词: COLOSSAL-MAGNETORESISTANCE MANGANITES;    DOUBLE-EXCHANGE;    DOPED LAMNO3;    LA1-XSRXMNO3;    CHARGE;    TRANSPORT;    CROSSOVER;    SYSTEMS;    LA1-XCAXMNO3;    SCATTERING;   

DOI  :  10.1103/PhysRevB.60.10747

来源: SCIE

【 摘 要 】

Distortions of the oxygen sublattice couple to e(g) orbitals of Mn3+ and drive a cooperative Jahn-Teller (orbital ordering) transition in LaMnO3. A simple model for this transition is studied. Without further adjustment, the model predicts the shape and stability of small (anti-Jahn-Teller) polarons that form when holes are doped into the material. This leads to a new description of the lightly-doped insulator, the antiferromagnetic to ferromagnetic transition, and the metal-insulator transition. [S0163-1829(99)12639-0].

【 授权许可】

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