Signature of Quantum Hall Effect Skyrmions in Tunneling: A Theoretical Study
J. J. Palacios, H. A. Fertig
Abstract
We present a theoretical study of the I-V tunneling characteristic between two parallel two-dimensional electron gases in a perpendicular magnetic field when both are near filling factor ν=1. Finite-size calculations of the single-layer spectral functions in the spherical geometry and analytical expressions for the disk geometry in the thermodynamic limit show that the current in the presence of skyrmions reflects in a direct way their underlying structure. It is also shown that fingerprints of the electron-electron interaction pseudopotentials are present in such a current.
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