Kinetomagnetism of chirality and its applications

TL;DR

This paper introduces the concept of kinetomagnetism of chirality, unifying various chiral phenomena and proposing a theoretical basis for understanding and discovering new chiral functionalities in physical systems.

Contribution

It proposes the hypothesis of kinetomagnetism of chirality, linking it to known phenomena and interconnecting it with magnetoelectric effects and nonreciprocity, advancing the theoretical framework of chiral systems.

Findings

Unified understanding of chiral phenomena through kinetomagnetism

Identification of conjugate relationships among chiral effects

Foundation for discovering new chiral functionalities

Abstract

Chiral functionalities exhibited by systems lacking any mirror symmetry encompass natural optical activity, magnetochiral effect, diagonal current-induced magnetization, chirality-selective spin-polarized current of charged electrons or neutral neutrons, self-inductance, and chiral phonons. These phenomena are unified under the hypothesis of kinetomagnetism of chirality, which posits that any moving (charged or neutral) object in chiral systems induces magnetization in its direction of motion, consequently imparting chirality to the object due to this induced magnetization. We also found conjugate relationships among the kinetomagnetism of chirality, linear magnetoelectricity, and electric field induced directional nonreciprocity, highlighting their interconnections with magnetic, electric, and toroidal orders. The concept of the kinetomagnetism of chirality will be an essential basis for the theoretical understanding of known chiral phenomena such as natural optical activity or chiral phonons, and also the discovery of unexplored chiral functionalities.