Publication: Blume-Emery-Griffiths spin glass and inverted tricritical points
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American Physical Society (APS)
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Abstract
The Blume-Emery-Griffiths spin glass is studied by renormalization-group theory in d=3. The boundary between the ferromagnetic and paramagnetic phases has first-order and two types of second-order segments. This topology includes an inverted tricritical point, first-order transitions replacing second-order transitions as temperature is lowered. The phase diagrams show disconnected spin-glass regions, spin-glass and paramagnetic reentrances, and complete reentrance, where the spin-glass phase replaces the ferromagnet as temperature is lowered for all chemical potentials.
Added discussion, references, and figure insets. 5 pages, 6 figures. Published version
Added discussion, references, and figure insets. 5 pages, 6 figures. Published version
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Statistical Mechanics (cond-mat.stat-mech), Condensation, Physics, Systems, FOS: Physical sciences, Dimensions, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks, Lattice-gas model, st-order phase-transitions, Renormalization-group, Hierarchical lattices, Ising-model, Systems, Condensation, Dimensions, Separation, Disorder, Hierarchical lattices, Separation, st-order phase-transitions, Mathematical physics, Ising-model, Disorder, Renormalization-group, Physics, Mathematical physics, Lattice-gas model, Condensed Matter - Statistical Mechanics