Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-05-24
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
We investigate the transport of holes through $AlAs/In_{.10}Ga_{.90}As$ resonant tunneling diodes which utilize $In_xGa_{1-x}As$ prewells in the emitter with $x=0,.10,$ and $.20$. The data show an increase in peak current and bias at resonance and a concurrent increase in the peak-to-valley ratio with increasing x. We explain this enhancement in tunneling as due to confinement (or localiz- ation) of charges in the prewell and the formation of direct heavy(light) hole to heavy(light) hole conduction channels as a consequence.
Klem J. F.
Lewis Myron R.
Lin Shih-Yuin
Wei H. P.
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