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Brillouin zones

  1. Jan 21, 2016 #1
    Hi fellows,

    An FCC lattice has one atom per unit cell and a set of primitive vectors. Its 1st BZ has its distinctive 3D shape, set explicitly by the Wigner-seitz cell in the reciprocal space.

    What if we have a zinc-blende (GaAs) lattice with 2 atoms per unit cell?
    How are the primitive reciprocal lattice vectors defined for a unit cell with a basis? Consequently, how is the Wigner-Seitz cell defined in the reciprocal space ?

    Thanks
     
  2. jcsd
  3. Jan 22, 2016 #2

    DrDu

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    Science Advisor

    The change of the content of the unit cell changes neither the direct nor the reciprocal lattice. Hence also the Wigner Seitz cell will remain unchanged.
     
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