Infrared response of ordered polarons in layered perovskites

被引：55

作者：

Calvani, P

Paolone, A

Dore, P

Lupi, S

Maselli, P

Medaglia, PG

机构：

[1] UNIV ROMA LA SAPIENZA, DIPARTIMENTO FIS, IST NAZL FIS MAT, I-00185 ROME, ITALY

[2] AT&T BELL LABS, MURRAY HILL, NJ 07974 USA

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.54.R9592

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：R9592 / R9595

页数：4

共 25 条

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