Construction of a low-temperature gun and high-resolution field emission spectra from a Nb superconductor

被引：1

作者：

Oshima, C

Fujii, H

Yamashita, T

Uchiyama, S

Yamada, M

Nagaoka, K

Sakurai, T

机构：

[1] Waseda Univ, Dept Appl Phys, Shinjuku Ku, Tokyo 1698555, Japan

[2] Waseda Univ, Kagami Mem Lab Mat Sci & Technol, Shinjuku Ku, Tokyo 1690051, Japan

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 98077, Japan

来源：

APPLIED SURFACE SCIENCE | 1999年 / 146卷 / 1-4期

基金：

日本学术振兴会;

关键词：

high-resolution field emission spectra; Nb superconductor; low-temperature gun;

D O I：

10.1016/S0169-4332(99)00043-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To investigate the fine structures in high-resolution field electron emission (FE) spectra from superconductors, we have constructed new apparatuses including a low-temperature FE gun, which can be operated at about 2.2 K. The FE patterns have been observed with an optical-fiber measuring system and the electrons emitted in the direction of the tip axis are analyzed with the resolution of similar to 1 meV. By using this experimental apparatus, we have observed a sharp peak at the Fermi level in FE spectra from a niobium superconducting emitter. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：143 / 147

页数：5

共 14 条

[1] NOTTINGHAM EFFECT OF A SUPERCONDUCTING METAL [J].