INFRARED-SPECTROSCOPY OF ND2-YCEYCUO4 (Y=0-0.2) SINGLE-CRYSTALS

被引：8

作者：

ABEL, EV ^{[1
]}

BAGAEV, VS ^{[1
]}

BASOV, DN ^{[1
]}

DOLGOV, OV ^{[1
]}

PLOTNIKOV, AF ^{[1
]}

POIARKOV, AG ^{[1
]}

SADOVSKY, W ^{[1
]}

机构：

[1] UNIV GENEVA,CH-1211 GENEVA 4,SWITZERLAND

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 79卷 / 11期

关键词：

D O I：

10.1016/0038-1098(91)90445-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The data on the room temperature IR reflectivity (50-9000 cm-1) of the Nd(2-y)Ce(y)CuO4 single crystals (y = [0-0.2]) are reported. The in-plane reflectivity spectra (E perpendicular c) were found to be extremely sensitive to the Ce content. In contrast to this, the out-of-plane reflectivity (E parallel-to c) was found to be independent from doping. The reflectivity anisotropy of the superconducting crystals is close to that of La- and Bi-based materials, thus indicating the quasi 2D electronic structure of the above compounds. We obtained evidence that transition temperature decreases for the values of Ce content being higher than y = 0.155 due to decrease of the electron-phonon coupling constant.

引用

页码：931 / 933

页数：3

共 8 条

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