Phase diagram of a random-anisotropy mixed-spin Ising model

Details Phase diagram of a random-anisotropy mixed-spin Ising model Phase diagram of a random-anisotropy mixed-spin Ising model

2001-02-19

arxiv.org/abs/cond-mat/0102336v1

Phys. Rev. B 63, 184415 (2001)

Physics

Condensed Matter

Statistical Mechanics

8 pages, 4 figures, accepted for publication in Physical Review B

Scientific paper

10.1103/PhysRevB.63.184415

We investigate the phase diagram of a mixed spin-1/2--spin-1 Ising system in the presence of quenched disordered anisotropy. We carry out a mean-field and a standard self-consistent Bethe--Peierls calculation. Depending on the amount of disorder, there appear novel transition lines and multicritical points. Also, we report some connections with a percolation problem and an exact result in one dimension.

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