A new method of superconducting energy gap spectroscopy

G. A. Gogadze, V. M. Svistunov, R. Aoki, H. Murakami, M. Shirai

Research output: Contribution to journalArticlepeer-review


The phenomenon of field emission from a superconductor is studied. The total-energy distribution of the emitted electrons and that associated with the velocity component normal to the emitting surface are calculated. Both these distribution functions differ essentially from those for the normal state near the Fermi level. A spectroscopic method permitting the measurement of the plateau in the energy distribution of the field-emitted electrons is proposed. The size of this plateau gives directly the value of the energy gap.

Original languageEnglish
Pages (from-to)232-238
Number of pages7
JournalPhysica C: Superconductivity and its applications
Issue number3-4
Publication statusPublished - 1998 Mar 10
Externally publishedYes


  • Distribution function
  • Energy gap
  • Field emission
  • Gap spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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