Vacuum tunneling spectroscopy of thin film and bulk polycrystalline superconductors

K. W. Ng, Z. G. Khim, Danny P. Shum, E. L. Wolf

Research output: Contribution to journalArticle

Abstract

The "squeezable junction" method of Moreland and Hansma has been applied to study the superconducting energy gap of co-sputtered MoRe films and of arc melted and annealed polycrystals of LiTi2O4, with Tc = 11.3 K. The energy gap of LiTi2O4 is determined to be 1.95 ± 0.03 mV corresponding to 2Δ kBT>c = 4.00 ± 0.06, making this metal a strong coupling superconductor.

Original languageEnglish (US)
Pages (from-to)37-45
Number of pages9
JournalSurface Science
Volume181
Issue number1-2
DOIs
StatePublished - Mar 1 1987

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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