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The Effects of Electron-Electron Interactions on the Integer Quantum Hall Transitions

Dung-Hai Lee·Ziqiang Wang
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Abstract

We study the effects of electron-electron interaction on the critical properties of the plateau transitions in the {\it integer} quantum Hall effect. We find the renormalization group dimension associated with short-range interactions to be $-0.66\pm0.04$. Thus the non-interacting fixed point (characterized $z=2$ and $ν\approx 2.3$) is stable. For the Coulomb interaction, we find the correlation effect is a marginal perturbation at a Hartree-Fock fixed point ($z=1$, $ν\approx 2.3$) by dimension counting. Further calculations are needed to determine its stability upon loop corrections.

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Dung-Hai Lee, Ziqiang Wang. 1996-04-21. The Effects of Electron-Electron Interactions on the Integer Quantum Hall Transitions. https://doi.org/10.1103/physrevlett.76.4014

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