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Tunneling, remanence, and frustration in dysprosium-based endohedral single-molecule magnets
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
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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
Abstract [en]

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.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-222940DOI: 10.1103/PhysRevB.89.060406ISI: 000332419200002OAI: oai:DiVA.org:uu-222940DiVA: diva2:712673
Available from: 2014-04-16 Created: 2014-04-15 Last updated: 2014-04-16Bibliographically approved

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Westerström, Rasmus
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