# Orbital Floquet Engineering of Exchange Interactions in Magnetic Materials

## TL;DR

This paper introduces a novel method to control magnetic exchange interactions in materials by using periodic driving to manipulate orbital degrees of freedom through orbital Floquet engineering, leveraging AC Stark shifts.

## Contribution

It proposes two new protocols for orbital Floquet engineering to tune magnetic interactions, expanding the control over magnetic properties in materials.

## Key findings

- Protocols modify ligand and d orbitals to control exchange interactions
- Uses AC Stark shift for orbital manipulation
- Provides a new approach for magnetic property engineering

## Abstract

We present a new scheme to control the spin exchange interactions between two magnetic ions by manipulating the orbital degrees of freedom using a periodic drive. We discuss two different protocols for orbital Floquet engineering. In one case, we modify the properties of the ligand orbitals which mediate magnetic interactions between two transition metal ions. While in the other case, we mix the d orbitals on each magnetic ion. In contrast to previous works on Floquet engineering of magnetic properties, the present scheme makes use of the AC Stark shift of the states involved in the exchange process.