Voltage-flux bistability in damped direct-current squids

I. L. Atkin, E. Abraham, C. M. Pegrum

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We present an analysis and numerical study of a dc superconducting quantum interference device (SOUID) with a damped loop inductance. We find a previously unreported regime of voltage-flux testability due to the dampins resistor when the SQUID is biased below the zero-field critical current We determine the region where this phenomenon can be found in the parameter space defined by the damping resistance and the inductance parameter. We show that switching between the bistable states can be controlled by external flux pulses and by adding thermal noise to the model, we have determined the maximum noise level at which the bistability can be seen. © 1996 American Institute of Physics.

Original languageEnglish
Pages (from-to)1309-1311
Number of pages3
JournalApplied Physics Letters
Issue number9
Publication statusPublished - 26 Aug 1996


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