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Intrasubband and Intersubband Electron Relaxation in Semiconductor Quantum Wire Structures

Marcos R. S. Tavares·S. Das Sarma·G-Q. Hai
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Abstract

We calculate the intersubband and intrasubband many-body inelastic Coulomb scattering rates due to electron-electron interaction in two-subband semiconductor quantum wire structures. We analyze our relaxation rates in terms of contributions from inter- and intrasubband charge-density excitations separately. We show that the intersubband (intrasubband) charge-density excitations are primarily responsible for intersubband (intrasubband) inelastic scattering. We identify the contributions to the inelastic scattering rate coming from the emission of the single-particle and the collective excitations individually. We obtain the lifetime of hot electrons injected in each subband as a function of the total charge density in the wire.

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Marcos R. S. Tavares, S. Das Sarma, G-Q. Hai. 2000-04-04. Intrasubband and Intersubband Electron Relaxation in Semiconductor Quantum Wire Structures. https://doi.org/10.1103/physrevb.63.045324

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