Abstract
One-dimensional arrays of small-capacitance Josephson junctions exhibit a current-voltage curve that is characterized by a zero-current state for bias voltage below a threshold voltage . The threshold voltages can be modulated with an external magnetic field , which tunes effective Josephson coupling between adjacent electrodes of the array. The dependence of on is well explained by a model where is the injection voltage for a Cooper-pair charge soliton.
- Received 2 May 1996
DOI:https://doi.org/10.1103/PhysRevB.54.R6857
©1996 American Physical Society