Properties of fractional quantum Hall systems and nonequilibrium Green's function method of transport in nanostructures.

Title: Properties of fractional quantum Hall systems and nonequilibrium Green's function method of transport in nanostructures.
Identifier: AAI9510741
identifier: 9510741
Creator: Zang, Jun.
Contributor: Adviser: Joseph L. Birman
Date: 1994
Language: English
Publisher: City University of New York.
Subject: Physics, Condensed Matter
Abstract: This dissertation contains two parts. In part I the properties of the fractional quantum Hall effect (FQHE) systems are presented. I have numerically studied the Laughlin wave function in disk geometry. The hierarchy structure of FQHE is studied and a global phase diagram is proposed. The magnetoexciton in the FQHE system is studied and photoluminescence as well as resonance Raman scattering is calculated. I also calculated the Fermi edge singularities in the double layer FQHE systems.;In part II, the resonant tunneling through nanostructures was studied using the non-equilibrium Green's function approach. The intrinsic bistability due to many-body electron-electron interaction effects in the double barrier structure is studied. I also derived an exact Breit-Wigner formula for the resonant tunneling in the multiple-barrier structures, and showed that it is useful in the study of conductance fluctuations of electron transport through a strongly disordered quantum wire.
Type: dissertation
Source: PQT Legacy CUNY.xlsx
degree: Ph.D.

Media: Properties of fractional quantum Hall systems and nonequilibrium Green's function method of transport in nanostructures.