Infrared response of ordered polarons in layered perovskites

Article

关键词: LA2-XSRXCUO4;    LA2-XSRXNIO4+DELTA;    DEPENDENCE;    ABSORPTION;    SPECTRA;    LA2CUO4;    LA2NIO4;    STATES;    PLANE;    HOLES;   

DOI  :  10.1103/PhysRevB.54.R9592

来源: SCIE

【 摘 要 】

We report on the infrared absorption spectra of three oxides, were charged superlattices have been recently observed in diffraction experiments. In La1.67Sr0.33NiO4, polaron localization is found to suppress the low-energy conductivity through the opening of a gap and to split the E(2u)-A(2u) vibrational manifold of the oxygen octahedra. Similar effects are detected in Sr1.5La0.5MnO4 and in La2NiO4+y with peculiar differences related to the type of charge ordering.

【 授权许可】

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