Electron-Hole Correlation in Fractional Quantum Hall Systems

TL;DR

This paper models electron-hole correlations in fractional quantum Hall systems using a density matrix approach, deriving accurate groundstate wave functions for specific filling factors and revealing their clustering behavior.

Contribution

It introduces a density matrix representation that captures electron-hole correlations and derives accurate groundstate wave functions for fractional quantum Hall states.

Findings

Wave functions are accurate for ν=2/3 and 3/5.

Wave functions match known pair wave functions for ν=2/3 and 2/5.

Electron-hole clustering is associated with fractional quantum Hall states.

Abstract

The 2D system of electron confined to the lowest Landau level is described using a representation of the density matrix depending both on electron and hole coordinates. Condensation of the electron system into a fractional quantum Hall state is associated to clustering of particle and hole coordinates. The correlation of particle and hole coordinates is studied and groundstate wave functions are derived for $\nu=p/(2p \pm 1)$. These wave functions prove to be accurate for the studied cases $\nu=2/3$ and $3/5$ and are identical to pair wave functions [R. Morf et al., Phys. Rev. B34, 3037 (1986)] for $\nu=2/3$ and $2/5$.