Coulomb singularity effects in tunnelling spectroscopy of individual impurities
P. I. Arseyev, N. S. Maslova, V. I. Panov, S. V. Savinov
Abstract
Non-equilibrium Coulomb effects in resonant tunnelling processes through deep impurity states are analyzed. It is shown that Coulomb vertex corrections to the tunnelling transfer amplitude lead to a power-law singularity in current- voltage characteristics
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