def b2(self):
"""2D reciprocal lattice vector :math:`\\mathbf{b}_2=\\mathbf{b}^{*}`.
"""
a1 = Vector()
a1[:2] = self.a1
return zhat.cross(a1)[:2] / self.cell_area
def b2(self):
"""2D reciprocal lattice vector :math:`\\mathbf{b}_2=\\mathbf{b}^{*}`.
"""
a1 = Vector()
a1[:2] = self.a1
return zhat.cross(a1)[:2] / self.cell_area
def a2(self):
"""2D lattice vector :math:`\\mathbf{a}_2=\\mathbf{b}`."""
b1 = Vector()
b1[:2] = self.b1
return zhat.cross(b1) / self.cell_area
def a2(self):
"""2D lattice vector :math:`\\mathbf{a}_2=\\mathbf{b}`."""
b1 = Vector()
b1[:2] = self.b1
return zhat.cross(b1) / self.cell_area
