# Magnetoelectric Effects in Gyrotropic Superconductors

## TL;DR

This paper develops a general theoretical framework for understanding how supercurrents induce spin magnetization in recently discovered noncentrosymmetric superconductors with gyrotropic symmetry, expanding the scope beyond polar symmetry cases.

## Contribution

It introduces a comprehensive model for the magnetoelectric effect in gyrotropic superconductors, broadening the understanding of supercurrent-induced magnetization.

## Key findings

- Framework applicable to various gyrotropic superconductors
- Extends Edelstein effect to nonpolar symmetries
- Provides insights for superconducting spintronics applications

## Abstract

The magnetoelectric effect (or Edelstein effect) in noncentrosymmetric superconductors states that a supercurrent can induce spin magnetization. This is an intriguing phenomenon which has potential applications in superconducting spintronic devices. However, the original Edelstein effect only applies to superconductors with polar point group symmetry. In recent years, many new noncentrosymmetric superconductors have been discovered, such as superconductors with chiral lattice symmetry and superconducting transition metal dichalcogenides with various lattice structures. In this Rapid Communication, we provide a general framework to describe the supercurrent-induced magnetization in these recently discovered superconductors with gyrotropic point groups.