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Partial order from disorder in a classical pyrochlore antiferromagnet
(American Physical Society, 2008-10-01)
We investigate theoretically the phase diagram of a classical Heisenberg antiferromagnet on the pyrochlore lattice perturbed by a weak second-neighbor interaction J2. The huge ground-state degeneracy of the nearest-neighbor ...
Broken parity and a chiral ground state in the frustrated magnet CdCr2O4
(American Physical Society, 2006-08-01)
We present a model describing the lattice distortion and incommensurate magnetic order in the spinel CdCr2O4, a good realization of the Heisenberg 'pyrochlore' antiferromagnet. The magnetic frustration is relieved through ...