History Dependent Phenomena in the Transverse Ising Ferroglass: the Free Energy Landscape
Ying-Jer Kao, G. S. Grest, K. Levin, J. Brooke, T. F. Rosenbaum, G. Aeppli
Abstract
In this paper we investigate the relationship between glassy and ferromagnetic phases in disordered Ising ferromagnets in the presence of transverse magnetic fields, Γ. Iterative mean field simulations probe the free energy landscape and suggest the existence of a glass transition as a function of Γ which is distinct from the Curie temperature. New experimental field-cooled and zero-field-cooled data on LiHoxY1-xF4 provide support for our theoretical picture.
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