wulfric.Crystal.b2

property

property Crystal.b2

Second reciprocal lattice vector.

\[\boldsymbol{b_2} = \frac{2\pi}{V}\boldsymbol{a_3}\times\boldsymbol{a_1}\]

where \(V = \boldsymbol{a_1}\cdot(\boldsymbol{a_2}\times\boldsymbol{a_3})\)

Returns:

b2(3,) numpy.ndarray

Second reciprocal lattice vector \(\boldsymbol{b_2}\).