Now showing items 1-2 of 2
Ising phases of Heisenberg ladders in a magnetic field
(American Physical Society, 2007-09-14)
We show that Dzyaloshinskii-Moriya (DM) interactions can substantially modify the phase diagram of spin-1/2 Heisenberg ladders in a magnetic field provided they compete with exchange. For nonfrustrated ladders, they induce ...
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 ...