Abstract
We consider many-body enhanced electron tunneling through an InAs quantum dot in a magnetic field applied perpendicular to the tunneling direction. The critical exponent of the Fermi-edge singularity in the tunneling current is calculated as a function of the magnetic field. We use lowest Landau level approximation for the electrons in the emitter and perform scattering matrix calculations using the Born approximation. We examine in detail the anisotropic behavior of the amplitude and shape of the resonant peaks.
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