DIRECT MEASUREMENT OF SINGLE-VORTEX DIAMETERS BY ELECTRON HOLOGRAPHY

被引：18

作者：

BONEVICH, JE

HARADA, K

KASAI, H

MATSUDA, T

YOSHIDA, T

TONOMURA, A

机构：

[1] Advanced Research Laboratory, Hitachi, Ltd., Hatoyama

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.50.567

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic-field distribution of vortices in single-crystal Nb thin foil specimens has been quantitatively measured with high spatial resolution by electron holography using a 300-kV field-emission transmission electron microscope. The diameters of single vortices were observed to broaden with increasing temperature under constant applied magnetic field. Vortex diameters varied from approximately 150 nm at 4.5 K to approximately 230 nm at 8 K, in agreement with the expected behavior. While vortices broadened with temperature, the total flux enclosed by them was constant.

引用

页码：567 / 570

页数：4

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