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VOLUME 76 (2002) | ISSUE 5 | PAGE 345
Coulomb singularity effects in tunnelling spectroscopy of individual impurities
PACS: 73.40.Gk, 73.40.Rw
Abstract
Non-equilibrium Coulomb effects in resonant tunnelling through deep impurity states are analyzed. It is shown that Coulomb vertex corrections to the tunnelling transfer amplitude lead to power law singularity in current-voltage characteristics.