The Blume-Emery-Griffiths Spin Glass and Inverted Tricritical Points
Disordered Systems and Neural Networks
2009-03-07 v2 Statistical Mechanics
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.
Keywords
Cite
@article{arxiv.0803.2720,
title = {The Blume-Emery-Griffiths Spin Glass and Inverted Tricritical Points},
author = {V. Ongun Özçelik and A. Nihat Berker},
journal= {arXiv preprint arXiv:0803.2720},
year = {2009}
}
Comments
Added discussion, references, and figure insets. 5 pages, 6 figures. Published version