Tunneling into Correlated Quantum Systems
Michael R. Geller
Department of Physics and Astronomy
University of Georgia
Resistance measurements have long been used as a spectroscopy of condensed
matter systems, as have other spectroscopies such as optical absorption.
For example, a measurement of the electrical current between two conductors
held at different potentials and separated by a thin tunneling barrier,
yields information about the electronic quantum states in those conductors.
In this talk I will describe a new way to understand, and calculate, the
tunneling spectra of strongly correlated electron systems, systems in which
the effects of electron-electron interaction are pronounced. Such a theory
is needed to explain recent easurements of tunneling into fractional
quantum Hall effect systems.