The remote plasmon polaron
University of Antwerp (UIA), Department of Physics,
Universiteitsplein 1 B-2610 Antwerpen, Belgium
2 Department of Physics and Astronomy, Condensed Matter and Surface Sciences Program Ohio University, Athens - Ohio 45701-2979, USA
Accepted: 19 November 1998
The Coulomb correlation of a remote electron separated from a two-dimensional electron system (2DES) is studied in the presence of a magnetic field applied perpendicular to the 2DES. The polarization produced by the remote electron is described as the excitation of virtual plasmons in the 2DES. The resulting composite quasi-particle, electron + polarization, is therefore called a plasmon polaron. The ground state energy of this quasi-particle is calculated using second-order perturbation theory and the results are related to recent resonant tunneling experiments. Qualitative agreement of the shift in the resonant tunneling peak with magnetic field is obtained.
PACS: 71.38.+i – Polarons and electron-phonon interactions / 73.23.-b – Mesoscopic systems / 73.25.+i – Surface conductivity and carrier phenomena
© EDP Sciences, 1999