Fluctuation dominated Josephson tunneling with a scanning tunneling microscope. Academic Article uri icon

abstract

  • We demonstrate Josephson tunneling in vacuum tunnel junctions formed between a superconducting scanning tunneling microscope tip and a Pb film, for junction resistances in the range 50-300 k Omega. We show that the superconducting phase dynamics is dominated by thermal fluctuations, and that the Josephson current appears as a peak centered at small finite voltage. In the presence of microwave fields ( f = 15.0 GHz) the peak decreases in magnitude and shifts to higher voltages with increasing rf power, in agreement with theory.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Naaman, O., Teizer, W., & Dynes, R. C.

citation count

  • 86

complete list of authors

  • Naaman, O||Teizer, W||Dynes, RC

publication date

  • August 2001