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Review Article


ScienceAsia 6 (1980): 151-177 |doi: 10.2306/scienceasia1513-1874.1980.06.151

 

ELECTRON DENSITY OF STATES IN DISORDERED SYSTEMS

 

V. SA-YAKANITa and H.R. GLYDEb

Summary: This paper gives a review of the theory of non interacting electrons in the disordered environment arising from either disordered positions of the ions in the solid or from impurities substituted at random through out the solid. The discussion is focussed on. the density of states available to electrons in disordered systems. The specific example considered is the heavily doped semiconductors. A detailed discussion is given concerning with the methods used to find the density of states both in the main part of the band and In the tail part of the band. Special emphasis is paid to the method introduced by one of us (V.S). An interpolation scheme is proposed whtch combines the high and low energies to obtain the density of staies at all energies.

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a Physics Department. Faculty of Science. Chulalongkorn University. Bcmgkok 5, Thailand
b Physics Department. University of Ottawa. Ottawa. Ontario. Canada K1N 6N5

Received 17 October 1980