Tunnelling transmission resonances through a zero-dimensional structure
Journal
Semiconductor Science and Technology
Journal Volume
12
Journal Issue
7
Pages
875-880
Date Issued
1997
Author(s)
Lundberg, T.
Frost, J.E.F.
Berggren, K.-F.
Ji, Z.-L.
Castleton, I.M.
Ritchie, D.A.
Pepper, M.
Abstract
We have performed low-temperature conductance measurements on a quantum dot. For zero magnetic field we find transmission resonances in the regions between successive ballistic quantized conductance plateaus. The results of the conductance measurements are compared with single-particle transmission coefficient calculations for the estimated two-dimensional device potential. In accordance with the experimental results, the calculation predicts transmission resonances of similar lineshape and energy spacing. We also include, in a simple but realistic model, the effect of electron-electron interaction.
SDGs
Type
journal article