One-band density of states for the Polk model for amorphous tetrahedrally bonded semiconductors
- 16 October 1973
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 6 (20), L384-L386
- https://doi.org/10.1088/0022-3719/6/20/003
Abstract
The one-band density of states for the Polk model for amorphous semiconductors is found by direct diagonalization for a 201-atom structure and some smaller structures. It is seen that the density of states has a definite two-peaked character. Implications for the lower half of the valence band and the middle portion of the vibrational density of states in amorphous silicon and germanium are discussed.Keywords
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