Honeycomb lattices Honeycomb lattice (or hexagonal lattice) is realized by graphene. The lattice consists of two carbon atoms (hereafter we call them $A$ and $B$ sites) per unit cell. The lattice vectors can be written as \[ \vec{a}_1 = \frac{a}{2} (3, \sqrt{3}), \quad \vec{a}_2 = \frac{a}{2} (3, -\sqrt{3}) ,\] where $a$ denotes carbon-carbon distance. The corresponding reciprocal lattice vector..
Physics Corner 2022. 7. 16. 17:13
Honeycomb lattices Honeycomb lattice (or hexagonal lattice) is realized by graphene. The lattice consists of two carbon atoms (hereafter we call them $A$ and $B$ sites) per unit cell. The lattice vectors can be written as \[ \vec{a}_1 = \frac{a}{2} (3, \sqrt{3}), \quad \vec{a}_2 = \frac{a}{2} (3, -\sqrt{3}) ,\] where $a$ denotes carbon-carbon distance. The corresponding reciprocal lattice vector..