PlumX Metrics
Embed PlumX Metrics

Multiple Andreev reflection in single-atom niobium junctions

Physical Review B - Condensed Matter and Materials Physics, ISSN: 1550-235X, Vol: 61, Issue: 12, Page: 8561-8569
2000
  • 67
    Citations
  • 0
    Usage
  • 28
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    67
    • Citation Indexes
      67
  • Captures
    28

Article Description

Single-atom junctions between superconducting niobium leads are produced using the mechanically controllable break junction technique. The current-voltage characteristics of these junctions are analyzed using an exact formulation for a superconducting quantum point contact. For tunneling between two single atoms with a sufficiently large vacuum barrier, it is found that a single channel dominates the current, and that the current-voltage characteristic is described by the theory, without adjustable parameters. For a contact of a single Nb atom it is shown that five conductance channels contribute to the conductance, in agreement with the number expected based on the number of valence orbitals for this d metal. For each of the channels the transmission probability is obtained from the fits, and the limits of accuracy of these numbers are discussed. © 2000 The American Physical Society.

Bibliographic Details

Shumeiko, V. S.; van der Post, N.; Bratus', E. N.; van Ruitenbeek, J. M.; Ludoph, B.; Wendin, G.; Bezuglyi, E. V.

American Physical Society (APS)

Materials Science; Physics and Astronomy

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know