Coulomb singularity effects in tunnelling spectroscopy of individual impurities

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Arseyev, P. I. ; Maslova, N. S. ; Panov, V. I. ; Savinov, S. V. (2002)
  • Related identifiers: doi: 10.1134/1.1520623
  • Subject: Condensed Matter
    arxiv: Condensed Matter::Superconductivity | Condensed Matter::Mesoscopic Systems and Quantum Hall Effect

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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