ONSET OF HIGH-TEMPERATURE SUPERCONDUCTIVITY IN THE 2-DIMENSIONAL LIMIT

被引：63

作者：

WANG, T ^{[1
]}

BEAUCHAMP, KM ^{[1
]}

BERKLEY, DD ^{[1
]}

JOHNSON, BR ^{[1
]}

LIU, JX ^{[1
]}

ZHANG, J ^{[1
]}

GOLDMAN, AM ^{[1
]}

机构：

[1] UNIV MINNESOTA,SCH PHYS & ASTRON,MINNEAPOLIS,MN 55455

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.43.8623

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transition between insulating and superconducting behavior in the low-temperature limit has been explored with use of ultrathin Dy-Ba-Cu-O c-axis-oriented films prepared by molecular-beam epitaxy. The transition appears as a separatrix between sets of R (T) curves that exhibit either insulating or superconducting behavior in the T --> O limit. Superconductivity is found only when the normal-state sheet resistance is below a value close to h/4e2, or 6450-OMEGA. Hall-effect data relate the depression of T(c) with increasing sheet resistance to a reduction in hole concentration.

引用

页码：8623 / 8626

页数：4

共 21 条

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