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

This article reviews the theoretical and experimental work related to the electronic properties
of bilayer graphene systems. Three types of bilayer stackings are discussed: the AA, AB, and …

The constituent particles of matter can arrange themselves in various ways, giving rise to
emergent phenomena that can be surprisingly rich and often cannot be understood by …

Higher-order topological insulators are newly proposed topological phases of matter, whose
bulk topology manifests as localized modes at two-or higher-dimensional lower boundaries …

We review the electronic properties of bilayer graphene, beginning with a description of the
tight-binding model of bilayer graphene and the derivation of the effective Hamiltonian …

Valley pseudospin, the quantum degree of freedom characterizing the degenerate valleys in
energy bands, is a distinct feature of two-dimensional Dirac materials,,,,. Similar to spin, the …

The field of 'Valleytronics' has recently been attracting growing interest as a promising
concept for the next generation electronics, because non-dissipative pure valley currents …

Electronic states at domain walls in bilayer graphene are studied by analyzing their four-and
two-band continuum models, by performing numerical calculations on the lattice, and by …

Chirally stacked N-layer graphene systems with N≥ 2 exhibit a variety of distinct broken
symmetry states in which charge density contributions from different spins and valleys are …

The existence of inequivalent valleys K and K′ in the momentum space of 2D hexagonal
lattices provides a new electronic degree of freedom, the manipulation of which can …