Possibility of p-wave pairing of composite fermions at $ν=1/2$

K. Park, V. Melik-Alaverdian, N. E. Bonesteel, J. K. Jain

Published 1998-06-23Version 1

We find that for the pure Coulomb repulsion the composite Fermi sea at $\nu=1/2$ is on the verge of an instability to triplet pairing of composite fermions. It is argued that a transition into the paired state, described by a Pfaffian wave function, may be induced if the short-range part of the interaction is softened by increasing the thickness of the two-dimensional electron system.