Instability under dilution of an antiferromagnetic Ising model on an fcc lattice: A Monte Carlo study

Face-centered-cubic antiferromagnets with vector spins (including those representing MnO and Cd1−xMnxTe) have nontrivial continuous degeneracies of their ground states which are broken by effects of either thermal or quenched disorder. Using spin-wave calculations near T=0, it is argued that thermal fluctuations select the collinear states. On the other hand, dilution favors noncollinear (yet long-range ordered) states.

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Dynamics of diluted antiferromagnetic Ising spin systems on the fcc lattice

Cieplak

Gawron

Cieplak

1989

Phys. Rev. B

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Instability under dilution of an antiferromagnetic Ising model on an fcc lattice: A Monte Carlo study

Cited by 4 publications

References 17 publications

Free energy of weakly dilute Ising models

Free energy of weakly dilute Ising models

Ordering by disorder: Ground-state selection in fcc vector antiferromagnets

Dynamics of diluted antiferromagnetic Ising spin systems on the fcc lattice

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