Effects of two dimensional plasmons on the tunneling density of states

Abstract

We show that gapless plasmons lead to a universal $(\delta \nu (\epsilon )/\nu \propto |\epsilon |/E_F)$ correction to the tunneling density of states of a clean two dimensional Coulomb interacting electron gas. We also discuss a counterpart of this effect in the "composite fermion metal" which forms in the presence of a quantizing perpendicular magnetic field corresponding to the half-filled Landau level. We argue that the latter phenomenon might be relevant for deviations from a simple scaling observed by A.Chang et al in the tunneling $I-V$ characteristics of Quantum Hall liquids.

12 pages, Latex, NORDITA report

References in corpus (3)

• Tunneling ``zero-bias'' anomaly in the quasi-ballistic regime
• Interaction-induced oscillations of the tunneling density of states in a non-quantizing magnetic field
• Zero-bias Anomaly of Tunneling into the Edge of a 2D Electron System

Cited by in corpus (15)

• Singular perturbation theory for interacting fermions in two dimensions
• Coulomb interacting Dirac fermions in disordered graphene
• Thermal conductivity of a two-dimensional electron gas with Coulomb interaction
• Zero-bias anomaly in two-dimensional electron layers and multiwall nanotubes
• Effective Soft-Mode Theory of Strongly Interacting Fermions
• Boson-assisted tunneling in layered metals
• Nonanalyticities in a Strongly Correlated Fermi Liquid: Corrections to Scaling at the Fermi-Liquid Fixed Point
• Tunneling Density of States of the Interacting Two-Dimensional Electron Gas
• Zero-bias tunneling anomaly in a clean 2D electron gas caused by smooth density variations
• Zero-Field Satellites of a Zero-Bias Anomaly
• Infrared catastrophe and tunneling into strongly correlated electron systems: Perturbative x-ray edge limit
• Density of states of the interacting two-dimensional electron gas
• Anomalous Density-of-States Fluctuations in Two-Dimensional Clean Metals
• Ballistic correction to the density of states in an interacting three-dimensional metal
• Infrared catastrophe and tunneling into strongly correlated electron systems: Exact solution of the x-ray edge limit for the 1D electron gas and 2D Hall fluid