# Boron Triangular Kagome Lattice with Half-Metallic Ferromagnetism

## TL;DR

This paper reports the design and analysis of a stable boron-based Kagome lattice with unique electronic properties, including half-metallic ferromagnetism and potential quantum anomalous Hall effect, achieved through first-principles calculations.

## Contribution

It introduces a novel boron Kagome lattice structure with predicted topological and magnetic properties, synthesized on a silver substrate with Mg guest atoms.

## Key findings

- Stable boron Kagome lattice can be synthesized on silver.
- The lattice exhibits topologically non-trivial flat bands.
- Predicted quantum anomalous Hall effect with spin-orbit coupling.

## Abstract

Based on the first-principles evolutionary materials design, we report a stable boron Kagome lattice composed of triangles in triangles on a two-dimensional sheet. The Kagome lattice can be synthesized on a silver substrate, with selecting Mg atoms as guest atoms. While the isolated Kagome lattice is slightly twisted without strain, it turns into an ideal triangular Kagome lattice under tensile strain. In the triangular Kagome lattice, we find the exotic electronic properties, such as topologically non-trivial flat band near the Fermi energy and half-metallic ferromagnetism, and predict the quantum anomalous Hall effect in the presence of spin-orbit coupling.