Excitonic ions and pseudopotentials in two-dimensional systems: Evidence for quantum Hall states of an X{sup {minus}} gas

Journal Article · Fri Oct 01 04:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.11661· OSTI ID:688023

Wojs, A ^[1]; Hawrylak, P ^[2]; Quinn, J J ^[1]

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1. Department of Theoretical Physics, University of Tennessee, Knoxville, Tennessee 37996 (United States)
2. Institute for Microstructural Sciences, National Research Council of Canada, Ottawa, K1A 0R6 (CANADA)

Systems of up to 12 electrons and six holes on the Haldane sphere are studied by exact numerical diagonalization. The low-lying states of the system involve bound excitonic complexes such as X{sub n}{sup {minus}}. The angular momenta of these complexes and the pseudopotentials describing their interaction are determined. The similarity to the electron pseudopotential suggests the possibility of incompressible ground states of a gas of X{sup {minus}} ions for {nu}{le}1/3. The {nu}=1/3 states of three and four X{sup {minus}}{close_quote}s are found. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 688023
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 16 Vol. 60; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR MOMENTUM
ELECTRON GAS
ENERGY SPECTRA
EXCITONS
GROUND STATES
HALL EFFECT
MAGNETIC FIELDS
TWO-DIMENSIONAL CALCULATIONS