Publication Details

This article was originally published as: Neves, BRA, Foster, TJ, Eaves, L, Main, PC, Henini, M, Fisher, DJ, Lerch, ML, Martin, AD & Zhang, C, Tunneling spectroscopy of hole plasmons in a valence-band quantum well, Physical Review B, 1996, 54(16), R11106-R11109. Copyright 1996 American Physical Society. The original journal can be found here.


We investigate the current-voltage characteristics of a p-doped resonant tunneling diode. In the voltage range slightly above the bias corresponding to resonant tunneling of holes into the first light-hole subband of the quantum well, we observe two satellite peaks which we attribute to plasmon-assisted tunneling transitions. A theoretical model is presented to account for these peaks. The model is based on the excitation of intrasubband and intersubband heavy-hole plasmons in the quantum well by hot holes injected close to the energy of the first light-hole subband. We also study the behavior of the satellites when a magnetic field is applied either parallel to or perpendicular to the current.

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