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Electron-phonon scattering at the intersection of two Landau levels

V. N. Golovach·M. E. Portnoi
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Abstract

We predict a double-resonant feature in the magnetic field dependence of the phonon-mediated longitudinal conductivity $σ_{xx}$ of a two-subband quasi-two-dimensional electron system in a quantizing magnetic field. The two sharp peaks in $σ_{xx}$ appear when the energy separation between two Landau levels belonging to different size-quantization subbands is favorable for acoustic-phonon transitions. One-phonon and two-phonon mechanisms of electron conductivity are calculated and mutually compared. The phonon-mediated interaction between the intersecting Landau levels is considered and no avoided crossing is found at thermal equilibrium.

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V. N. Golovach, M. E. Portnoi. 2002-02-11. Electron-phonon scattering at the intersection of two Landau levels. https://doi.org/10.1103/physrevb.74.085321

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