Originating from the studies of two-dimensional condensed-matter states, the concept of
topological order has recently been expanded to other fields of physics and engineering …

Since graphene became available by a scotch tape technique, a vast class of two-
dimensional (2D) van der Waals (vdW) layered materials has been researched intensively …

Flexible, stretchable, and bendable materials, including inorganic semiconductors, organic
polymers, graphene, and transition metal dichalcogenides (TMDs), are attracting great …

Silicene, germanene and stanene are part of a monoelemental class of two-dimensional
(2D) crystals termed 2D-Xenes (X= Si, Ge, Sn and so on) which, together with their ligand …

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 …

Silicene, the ultimate scaling of a silicon atomic sheet in a buckled honeycomb lattice,
represents a monoelemental class of two-dimensional (2D) materials similar to graphene …

Boosted by the great success of graphene, the past decade has witnessed the rapid
development of graphene-analogous two-dimensional (2D) nanomaterials. Despite the high …

We present the first experimental evidence of a topological phase transition in a
monoelemental quantum spin Hall insulator. Particularly, we show that low-buckled epitaxial …

Abstract Two‐dimensional (2D) materials based on group IVA elements have attracted
extensive attention owing to their rich chemical structures and novel properties. This …

We theoretically demonstrate that the second-order topological insulator with robust corner
states can be realized in two-dimensional Z 2 topological insulators by applying an in-plane …