The past decades have witnessed a rapid expansion in investigations of two-dimensional
(2D) monoelemental materials (Xenes), which are promising materials in various fields …

After the first unequivocal demonstration of spin transport in graphene [Tombros et al.,
Nature (London) 448, 571–574 (2007)], surprisingly at room temperature, it was quickly …

Topological insulators—materials that are insulating in the bulk but allow electrons to flow
on their surface—are striking examples of materials in which topological invariants are …

Quantum spin Hall materials hold the promise of revolutionary devices with dissipationless
spin currents but have required cryogenic temperatures owing to small energy gaps. Here …

In two-dimensional honeycomb ferromagnets, bosonic magnon quasiparticles (spin waves)
may either behave as massless Dirac fermions or form topologically protected edge states …

Silicene, a silicon analogue of graphene, has attracted increasing attention during the past
few years. As early as in 1994, the possibility of stage corrugation in the Si analogs of …

The discovery of the quantum spin Hall effect and topological insulators more than a decade
ago has revolutionized modern condensed matter physics. Today, the field of topological …

We demonstrated the synthesis of a conductive two-dimensional metal–organic framework
(MOF) thin film by single-step all-vapor-phase chemical vapor deposition (CVD). The …

Graphene, a two-dimensional (2D) carbon sheet, acquires many of its amazing properties
from the Dirac point nature of its electronic structures with negligible spin-orbit coupling …

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