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

C. Oshima, H. Fujii, T. Yamashita, S. Uchiyama, M. Yamada, K. Nagaoka, T. Sakurai

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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 approximately 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.

Original languageEnglish
Pages (from-to)143-147
Number of pages5
JournalApplied Surface Science
Volume146
Issue number1
DOIs
Publication statusPublished - 1999 May

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

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