Narrow Zero-Field Tunneling Resonance in Triclinic Mn$_{12}$ Acetate Ribbons

I. Imaz; J. Espin; D. Maspoch; J. Tejada; R. Zarzuela; N. Statuto; E. M. Chudnovsky

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arXiv · 1510.08894

Narrow Zero-Field Tunneling Resonance in Triclinic Mn$_{12}$ Acetate Ribbons

I. Imaz·J. Espin·D. Maspoch·J. Tejada·R. Zarzuela·N. Statuto·E. M. Chudnovsky

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Abstract

We report synthesis, structural characterization, and magnetic measurements of amorphous Mn$_{12}$-acetate ribbons with a triclinic short-range crystal order not previously seen in experiment. The ribbons exhibit the same structure of Mn$_{12}$ molecules and the same positions of tunneling resonances on the magnetic field as a conventional tetragonal Mn$_{12}$-acetate crystal. However, the width of the zero-field resonance is by at least one order of magnitude smaller, indicating very small inhomoge- neous broadening due to dipolar and nuclear fields. Possible origins of this effect are discussed.

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I. Imaz, J. Espin, D. Maspoch, J. Tejada, R. Zarzuela, N. Statuto, E. M. Chudnovsky. 2015-10-29. Narrow Zero-Field Tunneling Resonance in Triclinic Mn$_{12}$ Acetate Ribbons. https://arxiv.org/abs/1510.08894

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