A symmetrically doped double-layer electron system with total filling fraction ν0ex0ex=0ex0ex1/m decouples into two even-denominator composite fermion ``metals'' when the layer spacing is large. Statistical gauge fluctuations in this system mediate an attractive pairing interaction between composite fermions in different layers. A strong-coupling analysis shows that for any layer spacing d this pairing interaction leads to the formation of a paired quantum Hall state.
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Bonesteel et al. (1996) studied this question.
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