Monochromatic field electron emission from a Nb superconductor

Chuhei Oshima*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

To observe a monochromatic electron beam with energy width much narrower than that of a conventional electron beam, we have constructed an apparatus consisting of a low-temperature field-emission electron gun cooled to 4.2 K and a high-resolution electron spectrometer operating at high vacuum. With this system, we have observed spectra of the field electron emission from a niobium superconducting emitter. After tip cleaning by repeated treatments of field evaporation in vacuum less than 10-10 Pa, we have detected a sharp peak at the Fermi level in the spectra with an energy width of ~ 20 meV at 10 nA.

本文言語English
ページ(範囲)27-32
ページ数6
ジャーナルUltramicroscopy
78
1-4
DOI
出版ステータスPublished - 1999 6月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 器械工学

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