Fractional Quantum Hall Effect at Half-Filled Landau Level in a Multiple-Layer Electron System

Tapash Chakraborty and Pekka Pietiläinen
Phys. Rev. Lett. 59, 2784 – Published 14 December 1987
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Abstract

We have studied the excitation spectrum for a one-half filled Landau level in a two-layer system of interacting electrons, by finite-size calculations in a periodic rectangular geometry. The interlayer interaction is found to be important for obtaining a unique ground state and the required gap structure in the spectrum. On the basis of these observations, we predict that the fractional quantum Hall effect might be found at this filling in such a layered system.

  • Received 24 August 1987

DOI:https://doi.org/10.1103/PhysRevLett.59.2784

©1987 American Physical Society

Authors & Affiliations

Tapash Chakraborty*

  • Department of Theoretical Physics, University of Oulu, SF-90570 Oulu 57, Finland, and Max-Planck-Institut für Festkörperforschung, D-7000 Stuttgart 80, Germany

Pekka Pietiläinen

  • Department of Theoretical Physics, University of Oulu, SF-90570 Oulu 57, Finland

  • *Present address.

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Vol. 59, Iss. 24 — 14 December 1987

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