# Magnetic Flux Tuning of Spin Chirality in Mott Insulators with Ring Exchanges

## TL;DR

This paper demonstrates how magnetic flux can be used to control the spin chirality in Mott insulators with ring exchanges, revealing a versatile mechanism for manipulating quantum ground states in various lattice geometries.

## Contribution

It introduces a novel method to tune and switch spin chirality in Mott insulators via magnetic flux, applicable to both ladder and lattice systems.

## Key findings

- Magnetic flux can continuously tune spin chirality.
- Abrupt jumps and sign reversals of chirality are achievable.
- The mechanism is demonstrated in both 1D ladders and 2D lattices.

## Abstract

A manifestation of the many-body Aharonov-Bohm effect in the magnetic-flux-tuned Mott insulators with three-spin and four-spin ring exchanges, presents as an effective tool to manipulate the ground-state spin chirality, such as, tune the magnitude continuously, switch an abrupt jump, or even reverse its sign. Such a mechanism is demonstrated explicitly in both quasi-one-dimensional ladders and two-dimensional lattices with triangles as elementary plaquettes.