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Theory of the Quasiparticle Effective Masses in Semiconductors based on an Electron Self Energy Approach

Published online by Cambridge University Press:  16 February 2011

Xuejun Zhu
Affiliation:
Department of Physics, University of California, and Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720
Mark S. Hybertsen
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, NJ 07974
Steven G. Louie
Affiliation:
Department of Physics, University of California, and Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA 94720
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Abstract

A conceptually complete formalism for the quasiparticle effective masses in semiconductors is proposed. Our approach is based. on a generalized form of the theory, including the effects of the nonlocal, energy dependent electron self: energy operator Σ, which accounts for the electron-electron interaction. This introduces two -important effects on the expression of the effective mass: an explicit energy renormalization and an extra contribution to the matrix element that enters the usual . Our preliminary numerical results for prototypical GaAs show promising improvements over the results from the local density approximation for the calculated electron effective mass compared to experimental data.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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Theory of the Quasiparticle Effective Masses in Semiconductors based on an Electron Self Energy Approach
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