Energy distribution of field emission electrons from a niobium 〈111〈 tip

K. Nagaoka*, H. Ogawa, N. Arai, S. Uchiyama, T. Yamashita, C. Oshima, S. Otani

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We have fabricated Nb〈111〉 tips by electrochemical polishing from the single crystal wires along the 〈111〉 orientation, which has been prepared by means of floating zone, spark erosion, and mechanical polishing techniques. The energy distribution of the field emission electrons from the Nb〈111〉 tip has been measured at room temperature using a high resolution electron spectrometer recently developed. The experiments were carried out in vacuum of ∼ 3 × 10-9 Pa, and the tip surface was cleaned by field evaporation. The main part of the energy distribution is in agreement with the theoretical curves calculated on the basis of the Fowler-Nordheim theory. Two discrepancies are observed on low and high energy sides.

Original languageEnglish
Pages (from-to)218-221
Number of pages4
JournalSurface Science
Publication statusPublished - 1996 Jun 20


  • Field emission
  • Field emission spectroscopy
  • Low index single crystal surfaces
  • Niobium

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces


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