Topological phases with insulating bulk and gapless surface or edge modes have attracted
intensive attention because of their fundamental physics implications and potential …

Inspired by the great development of graphene, more and more research has been
conducted to seek new two-dimensional (2D) materials with Dirac cones. Although 2D Dirac …

Two-dimensional quadrupole topological insulator (2D QTI), as a new class of second-order
topological phases, has been experimentally confirmed in various artificial systems recently …

Designing new 2D systems with tunable properties is an important subject for science and
technology. Starting from graphene, we developed an algorithm to systematically generate …

Floquet states of periodically driven systems could exhibit rich topological properties. Many
of them are absent in their static counterparts. One such example is the chiral edge states in …

Due to the potential applications in low-power-consumption spintronic devices, the quantum
anomalous Hall effect (QAHE) has attracted tremendous attention in past decades …

Recently, several new materials exhibiting massless Dirac fermions have been proposed.
However, many of these do not have the typical graphene honeycomb lattice, which is often …

A model scheme is proposed for obtaining layered compounds consisting of carbon atoms
in the sp-and {vnsp} 2-hybridized states. This model is used to find the possibility of existing …

We investigate the effects of Rashba and intrinsic spin-orbit couplings (SOC) in graphynes.
First, we develop a general method to address spin-orbit couplings within the tight-binding …

Graphyne is a planar network of connected carbon chains, each formed by n acetylene
linkages. Uncountable ways to make these connections lead to uncountable structural …