Onset of superconductivity in ultrathin amorphous metal films

被引：0
|
作者：
Haviland, D.B.
Liu, Y.
Nease, B.
Goldman, A.M.
机构：
来源：
Physica B: Condensed Matter | 1990年 / 165-66卷 / 02期
关键词：
Bismuth and Alloys--Thin Films - Germanium and Alloys - Metallic Films;
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学科分类号：
摘要：
The onset of superconductivity in homogeneous ultrathin films grown incrementally is found to occur when their normal state sheet resistance falls below a value close to h/4e2, the quantum resistance for pairs. The data, which extends down to 0.4K, further suggest that in the T &rarr 0 limit such films are either superconducting or insulating, and that there may be a superconductor-insulator transition controlled by disorder.
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页码：1457 / 1458
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