Reflection-Symmetry Protected Antiferromagnetic Topological Insulator in Three-Dimensional Heavy-Fermion Systems

TL;DR

This paper proposes a new reflection-symmetry protected topological phase in 3D heavy-fermion antiferromagnetic systems, demonstrating a transition from paramagnetic to topological antiferromagnetic states in materials like SmB6.

Contribution

It introduces a novel reflection-symmetric topological state in 3D heavy-fermion antiferromagnets and explains the phase transition mechanism in f-electron materials.

Findings

Identification of reflection-symmetry protected topological phase

Demonstration of phase transition in SmB6

Proposal of a new topological state in heavy-fermion systems

Abstract

We study the topological properties of an antiferromagnetic phase with reflection symmetry in three-dimensional heavy-fermion systems. We here propose a reflection-symmetric topological state in the three-dimensional antiferromagnetic phase and demonstrate how the paramagnetic phase changes into the antiferromagnetic topological phase of f -electron materials such as SmB6.