Gadolinium as an accelerator for reaching thermal equilibrium and its influence on the ground state of Dy2GdN@C-80 single-molecule magnets

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dc.contributor.authorKostanyan, Aram
dc.contributor.authorSchlesier, Christin
dc.contributor.authorWesterstrom, Rasmus
dc.contributor.authorDreiser, Jan
dc.contributor.authorFritz, Fabian
dc.contributor.authorBuechner, Bernd
dc.contributor.authorPopov, Alexey A.
dc.contributor.authorPiamonteze, Cinthia
dc.contributor.authorGreber, Thomas
dc.date.accessioned2021-12-23T16:21:46Z-
dc.date.available2021-12-23T16:21:46Z-
dc.date.issued2021
dc.identifier.issn24699950
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/14011-
dc.description.abstractEndohedral fullerenes are perfect nanolaboratories for the study of magnetism. The substitution of a diamagnetic scandium atom in Dy2ScN@C-80 with gadolinium decreases the stability of a given magnetization and demonstrates Gd to act as a single atom catalyst that accelerates the reaching of thermal equilibrium. X-ray magnetic circular dichroism at the M-4,M-5 edges of Gd and Dy shows that Gd affects the ground state. The Gd magnetic moment follows the sum of the external and the dipolar magnetic field of the two Dy ions and compared to Dy2ScN@C-80 a lower exchange barrier is found between the ferromagnetic and the antiferromagnetic Dy configuration. The Arrhenius equilibration barrier as obtained from superconducting quantum interference device magnetometry is more than one order of magnitude larger, though a much smaller prefactor imposes the faster equilibration in Dy2GdN@C-80. This sheds light on the importance of angular momentum balance and symmetry in magnetic relaxation.
dc.description.sponsorshipSwiss National Science Foundation (SNF)Swiss National Science Foundation (SNSF) [200021L_147201, 206021_150784, 200020_153312, 200021_129861, 200021_147143, PZ00P2-142474]; Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [1602/4-1, 1602/5-1]; Swedish Research CouncilSwedish Research CouncilEuropean Commission [2015-00455]; We thank A. Seitsonen for the artwork in Fig. 1 and acknowledge financial support from the Swiss National Science Foundation (SNF Projects No. 200021L_147201, No. 206021_150784, No. 200020_153312, No. 200021_129861, No. 200021_147143, and No. PZ00P2-142474), the Deutsche Forschungsgemeinschaft (DFG Projects No. PO 1602/4-1 and No. 1602/5-1), and the Swedish Research Council (Grant No. 2015-00455).
dc.language.isoen
dc.publisherAMER PHYSICAL SOC
dc.relation.ispartofPHYSICAL REVIEW B
dc.subjectANISOTROPY
dc.subjectMaterials Science
dc.subjectMaterials Science, Multidisciplinary
dc.subjectPhysics
dc.subjectPhysics, Applied
dc.subjectPhysics, Condensed Matter
dc.subjectRAY CIRCULAR-DICHROISM
dc.titleGadolinium as an accelerator for reaching thermal equilibrium and its influence on the ground state of Dy2GdN@C-80 single-molecule magnets
dc.typejournal article
dc.identifier.doi10.1103/PhysRevB.103.014404
dc.identifier.isiISI:000604821500002
dc.description.volume103
dc.description.issue1
dc.contributor.orcid0000-0002-8416-9668
dc.contributor.orcid0000-0002-7596-0378
dc.contributor.orcid0000-0002-5234-1937
dc.contributor.researcheridE-9740-2016
dc.contributor.researcheridA-9937-2011
dc.contributor.researcheridD-9509-2015
dc.identifier.eissn24699969
dc.publisher.placeONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
dcterms.isPartOf.abbreviationPhys. Rev. B
dcterms.oaStatusGreen Published, Green Submitted, Green Accepted
crisitem.author.deptUniversität Osnabrück-
crisitem.author.deptUniversität Osnabrück-
crisitem.author.deptUniversität Osnabrück-
crisitem.author.deptUniversität Osnabrück-
crisitem.author.deptUniversität Osnabrück-
crisitem.author.orcid0000-0003-4710-4512-
crisitem.author.orcid0000-0001-7480-1271-
crisitem.author.orcid0000-0002-6304-8795-
crisitem.author.netidKoAr001-
crisitem.author.netidScCh001-
crisitem.author.netidWeRa001-
crisitem.author.netidDrJa001-
crisitem.author.netidFrFa001-
crisitem.author.netidPoAl001-
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