1. “The Nature of the Chemical Bond.”;Pauling,1960
2. “The Theory and Properties of Metals and Alloys.”;Mott,1936
3. Mott and Jones, 3 pp. 125–128.
4. A word about notation: we shall talk about Brillouin zone planes labeled by the reciprocal lattice vectors g drawn in the usual way6 according to the geometry of the primitive unit cell irrespective of whether or not the structure factor3 vanishes due to the internal arrangement of the atoms inside the unit cell. We shall restrict the expression “the Brillouin zone” to denote the first or “reduced” zone. All larger zones constructed out of appropriate zone planes we shall refer to asJones zones. Usually the planes selected for this have reasonably large structure factor and lie close to the free electron Fermi sphere. Our k will always be in extended k space6 unless the contrary is stated