OPTICAL EVIDENCE OF POLARONS IN SUPERCONDUCTING CUPRATES

被引：5

作者：

CAPIZZI, M

LUPI, S

CALVANI, P

MASELLI, P

PAOLONE, A

ROY, P

BERGER, H

BALESTRINO, G

机构：

[1] UNIV PARIS 11,UTILISAT RAYONNEMENT ELECTROMAGNET LAB,F-91405 ORSAY,FRANCE

[2] ECOLE POLYTECH FED LAUSANNE,PHB ECUBLENS,INST APPL PHYS,CH-1015 LAUSANNE,SWITZERLAND

[3] UNIV ROMA TOR VERGATA,DIPARTIMENTO INGN MECCAN,I-00173 ROME,ITALY

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)91367-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The reflectivity R(omega) of h-doped, metallic Bi2Sr2CuO6, as well as that of e-doped Nd(Gd)(2-x)CexCuO4-y, shows local modes in the far-infrared as well as a broad absorption centered at similar to 1000 cm(-1) (d-band). The d-band is made up by intense overtones of the local modes, thus revealing its polaronic origin. In the metallic samples, the polaronic absorption is superimposed to a Drude term. The intensity of the d-band is shown to be correlated with the optimum critical temperature of the corresponding cuprate family.

引用

页码：273 / 276

页数：4

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