Giant Relaxation Oscillations in a Very Strongly Hysteretic SQUID ring-Tank Circuit System

TL;DR

This paper demonstrates that strongly hysteretic SQUID ring-resonator systems exhibit relaxation oscillations, which can be accurately modeled and may enable new logic and memory device applications.

Contribution

It introduces the observation and modeling of relaxation oscillations in strongly hysteretic SQUID ring-resonator systems, highlighting potential applications in logic and memory devices.

Findings

Relaxation oscillations observed in strongly hysteretic SQUID systems.

Accurate modeling achieved through non-linear equations of motion.

Potential for novel logic and memory device applications.

Abstract

In this paper we show that the radio frequency (rf) dynamical characteristics of a very strongly hysteretic SQUID ring, coupled to an rf tank circuit resonator, display relaxation oscillations. We demonstrate that the the overall form of these characteristics, together with the relaxation oscillations, can be modelled accurately by solving the quasi-classical non-linear equations of motion for the system. We suggest that in these very strongly hysteretic regimes SQUID ring-resonator systems may find application in novel logic and memory devices.