Coexistence of magnetism and superconductivity in epitaxial GdN/W/NbN/W (100) and related NbN/W (100) multilayers

被引：11
|
作者：
Osgood, RM [1 ]
Pearson, JE [1 ]
Sowers, CH [1 ]
Bader, SD [1 ]
机构：
[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
来源：
JOURNAL OF APPLIED PHYSICS | 1998年 / 84卷 / 02期
关键词：
D O I：
10.1063/1.368169
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic and superconducting properties of epitaxial, (100)-oriented GdN/W/NbN/W multilayers have been characterized. We find that the interfacial layer of W permits the GdN/NbN layers to be grown smoothly. We report large flux trapping effects in the magnetic hysteresis loops measured below the superconducting transition temperature (T-c) of the multilayer, indicating the coexistence of magnetism and superconductivity down to layer thicknesses of 40 and 22 Angstrom for the NbN and GdN, respectively. Nonmagnetic NbN/W multilayers were also studied; in these multilayers, T-c is enhanced considerably above that of a single NbN layer due to coupling of the superconducting layers across the W spacers. This behavior is fitted to a model which explicitly includes interlayer coupling. [S0021-8979(98)04014-6].
引用
收藏
页码：940 / 944
页数：5
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