Quasiparticle density of states measurements in clean superconducting AlMn alloys

被引：11

作者：

O'Neil, G. C. ^{[1
]}

Schmidt, D. R. ^{[1
]}

Tomlin, N. A. ^{[1
]}

Ullom, J. N. ^{[1
]}

机构：

[1] NIST, Boulder, CO 80305 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期

关键词：

IMPURITIES;

D O I：

10.1063/1.3369280

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Aluminum doped with Manganese (AlMn) forms a superconducting alloy with the transition temperature suppressed by the added manganese. We present quasiparticle density of states (DOS) measurements on superconducting AlMn alloys made by current-voltage measurements on normal-metal/insulator/superconductor tunnel junctions. The DOS remains Bardeen-Cooper-Schrieffer-like with a reduced gap, matching the predictions of Kaiser. However, we measure additional subgap states not predicted by Kaiser, and demonstrate that these subgap states will harm some potential applications. (C) 2010 American Institute of Physics. [doi:10.1063/1.3369280]

引用

页数：6

共 19 条

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