Signature of Quantum Hall Effect Skyrmions in Tunneling: A Theoretical Study

Details Signature of Quantum Hall Effect Skyrmions in Tunneling: A Theoretical Study Signature of Quantum Hall Effect Skyrmions in Tunneling: A Theoretical Study

1997-02-20

arxiv.org/abs/cond-mat/9702189v1

Phys. Rev. Lett. 79, 471 (1997)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.79.471

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 $\nu=1$. 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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