Details

Autor(en) / Beteiligte

• Wijk, M M van
• Schuring, A
• Katsnelson, M I
• Fasolino, A

Titel

Relaxation of moiré patterns for slightly misaligned identical lattices: graphene on graphite

Ist Teil von

• 2d materials, 2015-09, Vol.2 (3), p.34010

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We study the effect of atomic relaxation on the structure of moiré patterns in twisted graphene on graphite and double layer graphene by large scale atomistic simulations. The reconstructed structure can be described as a superlattice of 'hot spots' with vortex-like behaviour of in-plane atomic displacements and increasing out-of-plane displacements with decreasing angle. These lattice distortions affect both scalar and vector potential and the resulting electronic properties. At low misorientation angles ( 1°) the optimized structures deviate drastically from the sinusoidal modulation which is often assumed in calculations of the electronic properties. The proposed structure might be verified by scanning probe microscopy measurements.