Electric field control of interaction between magnons and quantum spin defects

TL;DR

This paper demonstrates electric field control of magnon-QSD interactions by integrating multiferroic materials with NV centers, enabling tunable spintronic functionalities and proposing enhanced hybrid electric field sensors.

Contribution

It introduces a novel method for electric field tuning of magnon-QSD coupling using ferroelectric polarization control, advancing hybrid quantum spin systems.

Findings

Electric field can tune magnon-QSD interactions via ferroelectric polarization.

The approach enables improved sensitivity in hybrid electric field sensors.

Analytical modeling supports the experimental observations.

Abstract

Hybrid systems coupling quantum spin defects (QSD) and magnons can enable unique spintronic device functionalities and probes for magnetism. Here, we add electric field control of magnon-QSD coupling to such systems by integrating ferromagnet-ferroelectric multiferroic with nitrogen-vacancy (NV) center spins. Combining quantum relaxometry with ferromagnetic resonance measurements and analytical modeling, we reveal that the observed electric-field tuning results from ferroelectric polarization control of the magnon-generated fields at the NV. Exploiting the demonstrated control, we also propose magnon-enhanced hybrid electric field sensors with improved sensitivity.