METALLIC GROUND-STATE OF CUO CHAINS IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引：20

作者：

BUCHER, B

WACHTER, P

机构：

[1] Laboratorium für Festkörperphysik, Eidgenössische Technische Hochschule Zürich

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.51.3309

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the metallic ground state of the CuO chains in YBa2Cu4O8. The resistivities along the a and b directions have been determined for temperatures up to 900 K. Assuming a model of two shunted conduction channels along the b direction, representing the chain and plane resistivity, the resistivity of the chain chain has been calculated. Below 300 K, chainT2 and approaches a T4/3 temperature dependence above 500 K. At least above Tc, two different kinds of free carriers exist simultaneously: highly correlated charge carriers inside the CuO2 plane and itinerant electrons along the CuO chain. © 1995 The American Physical Society.

引用

页码：3309 / 3311

页数：3

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