AN INVESTIGATION OF LOW ENERGY STRUCTURE IN NIOBIUM SINGLE CRYSTALS BY TUNNELING.

Abstract

An investigation of low energy superconductive tunneling into very pure single crystal niobium was performed. Lead and indium films, evaporated onto oxide barriers, were used as the probe. Evidence was found for a second energy gap in niobium at delta/10. The gap is temperature independent and agrees with various theoretical predictions. Additional new voltage structure is found in junctions formed with lead, indicative of tunneling processes occurring within the barrier. Various processes are proposed to explain the structure. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1969
Accession Number
AD0698271

Entities

People

  • John W. Hafstrom
  • Robert Marc Rose

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Crystals
  • Energy Gaps
  • Quantum Tunneling
  • Single Crystals
  • Tunneling

Fields of Study

  • Physics

Readers

  • Quantum Chemistry
  • Superconducting Magnet Technology
  • Thin Film Deposition Science.