New Memory Concept for Superconducting Electronics

TL;DR

This paper proposes a novel superconducting memory design combining ferromagnetic dots and Josephson junctions, demonstrating nonvolatile data storage at room temperature with promising scalability for large-scale integration.

Contribution

It introduces a new superconducting memory concept integrating ferromagnetic dots with Josephson junctions, and demonstrates initial implementation and room-temperature nonvolatile storage.

Findings

Successful implementation using 3 μm Nb technology

Nonvolatile data storage demonstrated at 300 K

Good scalability expected for large-scale integration

Abstract

A new concept for nonvolatile superconducting memories is proposed. The devices combine ferromagnetic dots for the storage of the data and Josephson junctions for their readout. Good scalability is expected for large scale integration. First memory cells have been implemented using 3 $\mu$m-Nb-technology and permalloy dots. Nonvolatile data storage at 300 K was demonstrated.