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

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 نشر من قبل Ricardo Zarzuela
 تاريخ النشر 2015
  مجال البحث فيزياء
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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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