Persistent spin oscillations in a spin-orbit-coupled superconductor

TL;DR

This paper demonstrates that quasi-two-dimensional superconductors with tunable spin-orbit coupling can exhibit persistent, undamped collective spin oscillations induced by supercurrents, enabling potential high-frequency spin oscillator applications.

Contribution

It introduces the concept of persistent spin oscillations in spin-orbit-coupled superconductors and proposes their use as high-frequency spin oscillators.

Findings

Undamped collective spin oscillations can be excited by supercurrents.

These oscillations operate in the 10 GHz to 1 THz frequency range.

Potential application as persistent spin oscillators.

Abstract

Quasi-two-dimensional superconductors with tunable spin-orbit coupling are very interesting systems with properties that are also potentially useful for applications. In this manuscript we demonstrate that these systems exhibit undamped collective spin oscillations that can be excited by the application of a supercurrent. We propose to use these collective excitations to realize persistent spin oscillators operating in the frequency range of 10 GHz - 1 THz.