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Considering the role of electron correlation in a two-dimensional (2D) system in strong magnetic field, we investigate the quantum states of two interacting electrons in the quantum Hall effect regime. We introduce sub-Landau levels of the two-electron states by determining their energies and degeneracies. The effects of electron correlation, Zeeman splitting and energy-level broadening on the stability of the electron-pair states are discussed. It is shown that the two electrons in the triplet state with spins aligned parallel to the magnetic field can form a stable electron pair in the 2D system in GaAs/AlGaAs heterojunction. A wavefunction of many electron pairs are presented and compared with the Laughlin wavefunction.
G.‐Q. Hai (Mon,) studied this question.