Fermi Edge Singularities in Transport through Quantum Dots

Details Fermi Edge Singularities in Transport through Quantum Dots Fermi Edge Singularities in Transport through Quantum Dots

2006-03-24

arxiv.org/abs/cond-mat/0603668v2

Phys. Rev. B74 (2006) 035329

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 5 figures

Scientific paper

10.1103/PhysRevB.74.035329

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.

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