Phase-Controlled Force and Magnetization Oscillations in Superconducting Ballistic Nanowires

TL;DR

This paper predicts phase-controlled forces and magnetization oscillations in superconducting nanowire junctions, highlighting a giant magnetic response to weak magnetic fields in ballistic Josephson junctions with potential applications in nanoscale devices.

Contribution

It introduces the concept of phase-controlled forces and magnetization oscillations in superconducting nanowires, with a focus on the giant magnetic response in ballistic Josephson junctions.

Findings

Superconductivity-induced forces in the 0.01-0.1 nN range.

Magnetization oscillations in nanowire junctions.

Predicted giant magnetic response to weak magnetic fields.

Abstract

The emergence of superconductivity-induced phase-controlled forces in the (0.01-0.1) nN range, and of magnetization oscillations, in nanowire junctions, is discussed. A giant magnetic response to applied weak magnetic fields, is predicted in the ballistic Josephson junction formed by a superconducting tip and a surface, bridged by a normal metal nanowire where Andreev states form.