# Noncollinear magnetic ordering in a frustrated magnet: Metallic regime and the role of frustration

## TL;DR

This paper investigates noncollinear magnetic phases in a frustrated metallic Kondo lattice model on the Shastry-Sutherland lattice, revealing a flux state stabilized by frustration without needing Dzyaloshinskii-Moriya interactions.

## Contribution

It demonstrates the emergence of a noncollinear flux state in a metallic frustrated magnet without Dzyaloshinskii-Moriya interactions, extending understanding of magnetic orderings in such systems.

## Key findings

- Noncollinear flux state stabilized over a broad parameter range
- Magnetic states can be controlled by temperature, magnetic field, and frustration
- Dzyaloshinskii-Moriya interaction not required for noncollinear order in metallic regime

## Abstract

We explore the magnetic phases in a Kondo lattice model on the geometrically frustrated Shastry-Sutherland lattice at metallic electron densities, searching for noncollinear and noncoplanar spin textures. Motivated by experimental observations in many rare-earth-based frustrated metallic magnets, we treat the local moments as classical spins and set the coupling between the itinerant electrons and local moments as the largest energy scale in the problem. Our results show that a noncollinear flux state is stabilized over an extended range of Hamiltonian parameters. These spin states can be quenched efficiently by external fields like temperature and magnetic field as well as by varying the degree of frustration in the electronic itinerancy and exchange coupling between local moments. Interestingly, unlike insulating electron densities that we discussed in paper I of this sequence, a Dzyaloshinskii-Moriya interaction between the local moments is not essential for the emergence of their noncollinear ordering.