MAGNETOTUNNELING AS A PROBE OF LUTTINGER-LIQUID BEHAVIOR

School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom(February 1, 2008)A novel method for detecting Luttinger-liquid behavior is proposed. The idea is to measure thetunneling conductance between a quantum wire and a parallel two-dimensional electron system asa function of both the potential difference between them, V, and an in-plane magnetic field, B. Weshow that the two-parameter dependence on B and V allows for a determination of the characteristicdependence on wave vector q and frequency ω of the spectral function, A