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Zero-bias Anomaly of Tunneling into the Edge of a 2D Electron System

L. Shekhtman·L. I. Glazman
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Abstract

We investigate the electron tunneling into the edge of a clean weakly interacting two-dimensional electron gas. It is shown that the corresponding differential conductance $G(V)$ has a cusp at zero bias, and is characterized by a universal slope $|dG/dV|$ at $V=0$. This singularity originates from the electron scattering on the Friedel oscillation caused by the boundary of the system.

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L. Shekhtman, L. I. Glazman. 1995-06-30. Zero-bias Anomaly of Tunneling into the Edge of a 2D Electron System. https://doi.org/10.1103/physrevb.52.r2297

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