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

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

1995-06-30

arxiv.org/abs/cond-mat/9506138v1

Physics

Condensed Matter

10 pages, uuencoded compressed Postscript file, to appear in Phys. Rev. B (Rapid Communications)

Scientific paper

10.1103/PhysRevB.52.R2297

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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