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Impact Ionization and Auger Recombination in Semiconductors: Implementation Within the Flapw Code

Published online by Cambridge University Press:  21 March 2011

S. Picozzi ,
A. Continenza ,
R. Asahi ,
W. Mannstadt ,
C. B. Geller  and
A. J. Freeman
S. Picozzi
Affiliation:
INFM - Dip. Fisica, Univ. L'Aquila, 67010 Coppito (L'Aquila), Italy
A. Continenza
Affiliation:
INFM - Dip. Fisica, Univ. L'Aquila, 67010 Coppito (L'Aquila), Italy
R. Asahi
Affiliation:
Toyota Central R&D Labs. Inc., Japan
W. Mannstadt
Affiliation:
Fachbereich Physik, Philipps-Universitat Marburg, Germany
C. B. Geller
Affiliation:
Bettis Atomic Power Laboratory, West Miffin, PA (U.S.A.)
A. J. Freeman
Affiliation:
Dept. of Phys. and Astron. and Materials Research Center, Northwestern University, Evanston, IL 60208 (U.S.A.)
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Abstract

We present a method to calculate impact ionization and Auger recombination rates within density functional theory and a screened-exchange approach and implement it in the all- electron FLAPW method. We investigate the dependence of the overlap matrix elements as a function of the states involved along the main symmetry lines of the Brillouin zone. Our results for the final impact ionization rates along the main symmetry lines of the Brillouin zone. Our results for the final impact ionization rates along τ — X and τ —L directions for GaAs show a strong anisotropy imposed by energy and momentum conservation and related to the use of a realistic and accurate sX-LDA band structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 677: Symposium AA – Advances in Materials Theory and Modeling–Bridging Over Multiple-Length and Time Scales , 2001 , AA4.17
Copyright
Copyright © Materials Research Society 2001

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References

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