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Magnetism and Charge ordering in TMTTF$_2$-PF$_6$ organic crystals

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 نشر من قبل Gianluca Giovannetti GG
 تاريخ النشر 2011
  مجال البحث فيزياء
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Using a combination of Density Functional Theory, mean-field analysis and exact diagonalization calculations we reveal the emergence of a dimerized charge ordered state in TMTTF$_2$-PF$_6$ organic crystal. The interplay between charge and spin order leads to a rich phase diagram. Coexistence of charge ordering with a structural dimerization results in a ferroelectric phase, which has been observed experimentally. The tendency to the dimerization is magnetically driven revealing TMTTF$_2$-PF$_6$ as a multiferroic material.



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