Ensemble Density Functional Theory For Inhomogeneous Fractional Quantum Hall Systems

    Authors

    O. Heinonen; M. I. Lubin;M. D. Johnson

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Int. J. Quantum Chem.

    Keywords

    STRONG MAGNETIC-FIELDS; DIMENSIONAL ELECTRON-GAS; TRANSITION-METAL; OXIDES; OCCUPIED STATES; CHARGE-DENSITY; EDGE CHANNELS; FLUID; DOTS; FORMALISM; Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical

    Abstract

    The fractional quantum Hall effect (FQHE) occurs at a certain magnetic field strengths B*(n) in a two-dimensional electron gas of density n at strong magnetic fields perpendicular to the plane of the electron gas. At these magnetic fields strengths, the system is incompressible, i.e., there is a finite cost in energy for creating charge density fluctuations in the bulk, while the boundary of the electron gas has gapless modes of density waves. The bulk energy gap arises because of the strong electron-electron interactions. While there are very good models for infinite homogeneous systems and for the gapless excitations of the boundary of the electron gas, computational methods to accurately model finite, inhomogeneous systems with more than about 10 electrons have not been available until very recently. We will here review an ensemble density functional approach to studying the ground state of large inhomogeneous spin-polarized FQHE systems. (C) 1996 John Wiley & Sons, Inc.

    Journal Title

    International Journal of Quantum Chemistry

    Volume

    60

    Issue/Number

    7

    Publication Date

    1-1-1996

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    1443

    Last Page

    1455

    WOS Identifier

    WOS:A1996VV91200028

    ISSN

    0020-7608

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