Topological Weyl semimetals have been attracting broad interest. Recently, a new type of
Weyl point with topological charge of four, termed as charge-four Weyl point (C-4 WP), was …

In electronics systems, the Weyl points can be classified into three types based on the
geometry of the Fermi surface, and each type exhibits various unique and intriguing …

We study the quantum critical phenomena emerging at the transition from triple-Weyl
semimetal to band insulator, which is a topological phase transition described by the change …

The most fundamental symmetry in condensed matter physics is the crystallographic
symmetry, such that solids could exhibit unconventional excitations beyond Dirac and Weyl …

Double-Weyl fermions with quadratic dispersion, as novel topological states of matter, have
attracted a great deal of attention in recent years. However, they are very rare in two …

Quantum critical behaviors induced by a putative quantum phase transition are vigilantly
investigated, which separates a d-wave superconducting state and d-wave …

The effects of short-range fermion-fermion interactions on the low-energy properties of
rhombohedral trilayer graphene are comprehensively investigated using the momentum …

An anisotropic flat band fermion system with a novel dispersion that is linear along one
direction and cubic along another is proposed in Phys. Rev. X. 13, 021012 (2023). We study …

Influence of short-range four-fermion interactions on quadratic and cubic nodal-line fermion
systems is studied by renormalization group theory. It is found that arbitrarily weak four …

Understanding the correlation effects in unconventional topological materials, in which the
fermion excitations take unusual dispersion, is an important topic in recent condensed …