Ginzburg-Landau theory of the cluster glass phase

Details Ginzburg-Landau theory of the cluster glass phase Ginzburg-Landau theory of the cluster glass phase

1996-11-28

arxiv.org/abs/cond-mat/9611233v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages Revtex, 5 figures. To appear in J. Phys. A. Lett

Scientific paper

10.1088/0305-4470/30/4/003

On the basis of a recent field theory for site-disordered spin glasses a Ginzburg-Landau free energy is proposed to describe the low temperatures glassy phase(s) of site-disordered magnets. The prefactors of the cubic and dominant quartic terms change gradually along the transition line in the concentration-temperature phase diagram. Either of them may vanish at certain points $(c_*, T_*)$, where new transition lines originate. The new phases are classified

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