Superconductivity effects in hopping conductivity of single-crystal La2CuO4 with excess oxygen

被引：5

作者：

Belevtsev, BI

Dalakova, NV

Panfilov, AS

机构：

[1] B. I. Verkin Inst. Low Temp. P., Nat. Acad. of Sci. of Ukraine, 310164 Kharkov

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00798-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The transition from variable-range hopping conductivity to simple activated one (the Arrhenius law) is observed in single-crystal La2CuO4+delta as the temperature is decreased below T similar or equal to 20 K. It is shown that this effect can be assigned to the presence of superconducting inclusions (of T-c = 15-20 K) in insulating sample. The existence of such inclusions may be related to the well-known phase separation for La2CuO4+delta.

引用

页码：1223 / 1224

页数：2

共 5 条

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[2]

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[4] PHASE-SEPARATION IN HIGH-TEMPERATURE SUPERCONDUCTORS AND RELATED MAGNETIC [J].

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[5]

ZAKHAROV AA, 1991, SVERKHPROVODIMOST, V4, P1906

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