2 research outputs found
Fermi Edge Singularities in Transport through Quantum Dots
We study the Fermi-edge singularity appearing in the current-voltage
characteristics for resonant tunneling through a localized level at finite
temperature. An explicit expression for the current at low temperature and near
the threshold for the tunneling process is presented which allows to coalesce
data taken at different temperatures to a single curve. Based on this scaling
function for the current we analyze experimental data from a GaAs-AlAs-GaAs
tunneling device with embedded InAs quantum dots obtained at low temperatures
in high magnetic fields.Comment: 12 pages, 5 figure