Infrared properties of n-type high-temperature superconductors

被引：0

作者：

Kim, JH ^{[1
]}

机构：

[1] Yonsei Univ, Dept Phys, Seoul 120749, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 1998年 / 33卷 / 01期

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中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The infrared properties of n-type high-T-c superconductors are in marked contrast with those of their p-type counterparts both in phononic and in electronic features. Disorder-activated forbidden modes and doping-induced extra modes have been observed in Nd2-xCexCuO4 and Sm2-xCexCuO4. The low-temperature reflectivity and transmission measurements identify neither a clear signature for the BCS gap nor any evidence for Holstein shifts of phonons. The gap symmetry and the role of electron-phonon interactions for n-type cuprates are discussed in connection with their infrared properties.

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页码：4 / 8

页数：5

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