Question: Consider a 2D crystal lattice with a primitive unit cell represented by vectors a1 and a2. The reciprocal lattice vectors are denoted as b1 and

Consider a 2D crystal lattice with a primitive unit cell represented by vectors a1 and a2. The reciprocal lattice vectors are denoted as b1 and b2. a) Define the Brillouin (BZ) in the context of reciprocal space. b) Consider a crystal lattice with reciprocal lattice vectors b1 = (2/3, 2/3) and b2 = (-2/3, 2/3). Calculate the area of first brillouin zone

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