Charge-localization effects in the infrared transmittance of layered perovskites

被引：29

作者：

Paolone, A ^{[1
]}

Giura, P ^{[1
]}

Calvani, P ^{[1
]}

Dore, P ^{[1
]}

Lupi, S ^{[1
]}

Maselli, P ^{[1
]}

机构：

[1] Univ Rome La Sapienza, Dipartimento Fis, INFM, I-00185 Rome, Italy

来源：

PHYSICA B | 1998年 / 244卷

关键词：

far-infrared spectroscopy; high-temperature superconductors;

D O I：

10.1016/S0921-4526(97)00458-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In a previous study it has been shown that the formation of charged superlattices in Ni-and Mn-based perovskites opens a gap in their infrared polaronic background. This signature of charge localization is here used to compare the behavior of the polaronic carriers in Sr2MnO4, La2NiO4+y, Nd2CuO4-y and Nd1.85Ce0.15CuO4-y. It is shown that, as the temperature decreases, the carriers tend to localize in the nickelate and the manganite, to slightly increase their mobility in both cuprates. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：33 / 40

页数：8

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