Superlattice Magnetophonon Resonances in Strongly Coupled InAs/GaSb Superlattices
R.S. Deacon, A.B. Henriques, R.J. Nicholas, P.A. Shields
TL;DR
This paper experimentally investigates miniband magnetoconduction in InAs/GaSb superlattices, revealing a new superlattice magnetophonon resonance caused by resonant electron scattering across the mini-Brillouin zone, linked to superlattice dispersion and magnetic quantization.
Contribution
It reports the first observation of a superlattice magnetophonon resonance in InAs/GaSb superlattices, connecting electron scattering phenomena to superlattice miniband properties.
Findings
Identification of a new superlattice magnetophonon resonance (SLMPR).
Resonance linked to electron scattering across the mini-Brillouin zone.
Resonance arises from superlattice dispersion and Landau level quantization.
Abstract
We report an experimental study of miniband magnetoconduction in semiconducting InAs/GaSb superlattices. For samples with miniband widths below the longitudinal optical phonon energy we identify a new superlattice magnetophonon resonance (SLMPR) caused by resonant scattering of electrons across the mini-Brillouin zone. This new resonant feature arises directly from the drift velocity characteristics of the superlattice dispersion and total magnetic quantisation of the superlattice Landau level minibands.
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