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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
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.
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- Copyright © Materials Research Society 1990
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