Publikationen

Exchange coupling in a frustrated trimetric molecular magnet reversed by a 1D nano-confinement

Autor(en)
Oleg Domanov, Eugen Weschke, Takeshi Saito, Herwig Peterlik, Thomas Pichler, Michael Eisterer, Hidetsugu Shiozawa
Abstrakt

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.

Organisation(en)
Elektronische Materialeigenschaften, Dynamik Kondensierter Systeme, Fakultätszentrum für Nanostrukturforschung
Externe Organisation(en)
Helmholtz-Zentrum Berlin für Materialien und Energie, National Institute of Advanced Industrial Science and Technology (AIST), Technische Universität Wien, Czech Academy of Sciences
Journal
Nanoscale
Band
11
Seiten
10615-10621
Anzahl der Seiten
7
ISSN
2040-3364
DOI
https://doi.org/10.1039/c9nr00796b
Publikationsdatum
06-2019
Peer-reviewed
Ja
ÖFOS 2012
Kondensierte Materie, Materialphysik
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/exchange-coupling-in-a-frustrated-trimetric-molecular-magnet-reversed-by-a-1d-nanoconfinement(a647cb6b-d965-43c6-8d25-66c4033cceb0).html