Layered Materials

Layered materials comprise stacked 2D sheets, whose interlayer bonding is governed by van der Waals interactions. Examples of 2D layered materials include graphite, hexagonal boron nitride (hBN), binary and ternary transition metal chalcogenides (e.g., MoS2, Nb3SiTe6), and silicene. The broad range of compositions of layered materials and the endless possibilities of combining them in heterostructures give rise to a rich spectrum of properties from insulators, through semiconductors, to superconductors. This creates exciting prospects for technological applications.

The corrugation energy surface of bilayer hBN. The yellow line represents a nearly free sliding path. Movement of the layers along this direction may cause the electronic properties to change significantly, producing a strong electromechanical response to torsion. Phys. Rev. Lett. 105, 046801 (2010)