  We investigate N=2 super-Yang-Mills theory on a three sphere in the presence
of an isospin chemical potential at strong coupling using the AdS/CFT
correspondence. This system exhibits an instability for sufficiently large
values of the chemical potential. In contrast to other related models, the
first excitation to condense is not a vector meson but rather a scalar charged
under the global SO(4) symmetry group. Furthermore, the spectrum of
fluctuations exhibits an interesting cross-over behaviour as a function of the
dimensionless temperature. We construct the new ground state of the non-linear
theory.
