lecture_14c notes

9 ev vsa 04 ev vsa d 02 ev energy band for 1 d

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Unformatted text preview: s Es= - 0.9 eV, Vs,a= - 0.4 eV, Vs,a-d = - 0.2 eV Energy Band for 1-D Lattice Energy Two orbital, single atom basis Hamiltonian Matrix Preview Problem: 2D Monatomic Square Crystals LCAO Basis for FCC Crystals LCAO Ga: [Ar]3d10 4s2 4p1 As: [Ar]3d10 4s2 4p3 Tight-binding for 3-D Crystals Tight Crystals Best estimate for energy with LCAO basis…. Hamiltonian matrix…. Overlap matrix…. Tight-binding for 3-D Crystals Tight Crystals Since the probability of finding electrons at each lattice site is equal… Consequently… Orbital Overlaps for 3-D Crystals Orbital Crystals distance from positive to negative lobe of p-orbital Orbital Overlaps for 3-D Crystals Orbital Crystals Orbital Overlaps for 3-D Crystals Orbital Diamond and Zincblende Diamond Zincblende 2D Monatomic Square Crystals 2D Monatomic Square Crystals 2D Dispersion Relations Es...
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This document was uploaded on 03/19/2014 for the course EECS 6.730 at MIT.

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