History Dependent Phenomena in the Transverse Ising Ferroglass: the Free Energy Landscape

Abstract

In this paper we investigate the relationship between glassy and ferromagnetic phases in disordered Ising ferromagnets in the presence of transverse magnetic fields, $\Gamma$. Iterative mean field simulations probe the free energy landscape and suggest the existence of a glass transition as a function of $\Gamma$ which is distinct from the Curie temperature. New experimental field-cooled and zero-field-cooled data on LiHo${}_x$Y${}_{1-x}$F${}_4$ provide support for our theoretical picture.

4 pages RevTex; 5 figures

References in corpus (1)

• From second to first order transitions in a disordered quantum magnet

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