THE LOCALIZED CHARACTER OF THE METALLIC STATE IN HIGH-TC SUPERCONDUCTORS

被引：12

作者：

DALLACASA, V ^{[1
]}

FEDUZI, R ^{[1
]}

机构：

[1] JOINT RES CTR,INST ADV MAT,I-21020 ISPRA,ITALY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1993年 / 195卷 / 1-2期

关键词：

D O I：

10.1016/0925-8388(93)90793-M

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The resistivity behaviour of a large series of polycrystalline samples at different defect (carrier) concentrations is discussed using the form rho0 exp(T0/T)b in which rho0 is a temperature-dependent parameter. This equation allows to examine the gradual and characteristic change of rho(T) as a function of carrier concentration observed in single-crystals as well as in polycrystalline superconductors within an single mechanism. A cross-over between the b=1/2 and the b=1/4 regimes is found. The ''metallic'' dependence of the normal resistivity state has a induced-disorder localized character.

引用

页码：531 / 534

页数：4

共 30 条

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