Tunneling, remanence, and frustration in dysprosium-based endohedral single-molecule magnets
2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 89, no 6, 060406- p.Article in journal (Refereed) Published
Paramagnetic atoms inside nanometer sized fullerenes realize robust, and chemically protected, spin systems. Changing the stoichiometry of the endohedral clusters results in a variety of magnetic ground states, as it is demonstrated for DynSc3-nN@C-80 (n = 1,2,3). All three exhibit distinct hysteresis and qualify as single-molecule magnets. In zero field the magnetization of n = 1 decays via quantum tunneling, while ferromagnetic coupling of the individual dysprosium moments results in remanence for Dy2ScN@C-80 and in a frustrated ground state for n = 3. The latter ground state turns out to be one of the simplest realizations of a frustrated, ferromagnetically coupled, system.
Place, publisher, year, edition, pages
2014. Vol. 89, no 6, 060406- p.
IdentifiersURN: urn:nbn:se:uu:diva-222940DOI: 10.1103/PhysRevB.89.060406ISI: 000332419200002OAI: oai:DiVA.org:uu-222940DiVA: diva2:712673