Titel
Exchange coupling in a frustrated trimetric molecular magnet reversed by a 1D nano-confinement
Autor*in
Eugen Weschke
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Takeshi Saito
Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Japan
... show all
Abstract
Single-molecule magnets exhibit magnetic ordering due to exchange coupling between localized spin components that makes them primary candidates as nanometric spintronic elements. Here we manipulate exchange interactions within a single-molecule magnet by nanometric structural confinement, exemplified with single-wall carbon nanotubes that encapsulate trimetric nickel(II) acetylacetonate hosting three frustrated spins. It is revealed from bulk and Ni 3d orbital magnetic susceptibility measurements that the carbon tubular confinement allows a unique one-dimensional arrangement of the trimer in which the nearest-neighbour exchange is reversed from ferromagnetic to antiferromagnetic, resulting in quenched frustration as well as the Pauli paramagnetism is enhanced. The exchange reversal and enhanced spin delocalisation demonstrate the means of mechanically and electrically manipulating molecular magnetism at the nanoscale for nano-mechatronics and spintronics.
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
phaidra.univie.ac.at/o:1076906
Erschienen in
Titel
Nanoscale
Band
11
Ausgabe
22
Seitenanfang
10615
Seitenende
10621
Publication
Royal Society of Chemistry (RSC)
Fördergeber
Austrian Science Fund (FWF) — P30431-N36
Austrian Science Fund (FWF) — P621333-N20
Austrian Science Fund (FWF) — P27769-N20
Erscheinungsdatum
2019
Zugänglichkeit
Rechte
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