Studies on Topological High-fold Degenerate Semimetal with Chiral Structure

TL;DR

This paper identifies 147 chiral high-fold degenerate topological semimetals through high-throughput screening, analyzing their topological properties and potential for exploring exotic fermions and applications.

Contribution

It presents a large-scale identification and analysis of chiral high-fold degenerate semimetals, highlighting their unique topological features.

Findings

147 chiral materials with exotic fermions identified

Analysis of topological surface states and Berry curvature

Potential platform for exploring chiral fermion properties

Abstract

In recent years, a type of topological semimetals (TSMs) that can host new fermions with high-fold degeneracy has attracted considerable interest. Among them, ones with chiral structrue particularly catch our attention. Such chiral high-fold degenerate semimetals always have a larger topological charge and longer Fermi arcs which bringing about some special properties. In this work, we found 147 chiral materials with exotic fermions near Fermi level by high-throughput calculation and screening. We selected some typical examples to analyse its topological properties such as topological surface states (TSSs) and Berry curvature. Our results are helpful to provide a promising platform for exploring the physical properties of chiral fermions and application of chiral TSMs.