Polaronic signatures in mid-infrared spectra: Prediction for LaMnO3 and CaMnO3

Article

关键词: OPTICAL-CONDUCTIVITY;    TEMPERATURE-DEPENDENCE;    LA1-XCAXMNO3 SYSTEM;    DOUBLE EXCHANGE;    MANGANITES;    ABSORPTION;    SPIN;    SPECTROSCOPY;    TRANSITION;    EXCITON;   

DOI  :  10.1103/PhysRevB.65.205207

来源: SCIE

【 摘 要 】

Hole-doped LaMnO3 and electron-doped CaMnO3 form self-trapped electronic states. The spectra of these states have been calculated using a two orbital (Mn e(g) Jahn-Teller) model, from which the nonadiabatic optical conductivity spectra are obtained. In both cases the optical spectrum contains weight in the gap region, whose observation will indicate the self-trapped nature of the carrier states. The predicted spectra are proportional to the concentration of the doped carriers in the dilute regime, with coefficients calculated with no further model parameters.

【 授权许可】

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