Transverse Field Ising Ferromagnetism in Mn$_{12}$-acetate-MeOH

TL;DR

This study demonstrates that Mn$_{12}$-acetate-MeOH is a realization of a transverse-field Ising ferromagnet, differing from Mn$_{12}$ acetate due to its high symmetry and lack of solvent disorder, based on magnetic susceptibility measurements.

Contribution

The paper introduces Mn$_{12}$-acetate-MeOH as a new high-symmetry variant that exhibits transverse-field Ising ferromagnetism, contrasting with the original Mn$_{12}$ acetate.

Findings

Mn$_{12}$-acetate-MeOH shows ferromagnetic behavior consistent with transverse-field Ising model.

Data aligns with theoretical predictions for high-symmetry transverse-field Ising systems.

Contrasts with Mn$_{12}$ acetate, where disorder causes random field effects.

Abstract

We report measurements of the magnetic susceptibility of single crystals of Mn$_{12}$-acetate-MeOH, a new high-symmetry variant of the original single molecule magnet Mn$_{12}$-acetate. A comparison of these data to theory and to data for the Mn$_{12}$ acetate material shows that Mn$_{12}$-acetate-MeOH is a realization of a transverse-field Ising ferromagnet in contrast to the original Mn$_{12}$ acetate material, in which solvent disorder leads to effects attributed to random field Ising ferromagnetism.