Ratchet potential in superconducting quantum interference devices containing a double-barrier junction

摘要

The periodic effective potential of a superconducting quantum interference device containing anunderdamped Josephson junction in the first branch and a double-barrier junction in the secondis studied. An effective non-sinusoidal expression for the current–phase relation with anadditional half harmonic term is used for the double-barrier junction. The system allows voltagerectification under opportunely chosen parameter values.