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  Experimental Determination of Single Molecule Toroic Behaviour in a Dy8 Single-Molecule Magnet

Zhang, Q., Baker, M. L., Li, S., Sarachik, M. P., Baldovi, J., Gaita-Ariño, A., et al. (2019). Experimental Determination of Single Molecule Toroic Behaviour in a Dy8 Single-Molecule Magnet. Nanoscale, 11(32), 15131-15138. doi:10.1039/C9NR05182A.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-5ABB-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-F31E-9
Genre: Journal Article

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https://dx.doi.org/10.1039/C9NR05182A (Publisher version)
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 Creators:
Zhang, Q.1, 2, Author
Baker, M. L.3, 4, Author
Li, S.1, 2, Author
Sarachik, M. P.1, 2, Author
Baldovi, J.5, Author              
Gaita-Ariño, A.6, Author
Coronado, E.6, Author
Alexandropoulos, D. I.7, Author
Stamatatos, T. C.7, Author
Affiliations:
1Department of Physics, Graduate Center, CUNY, ou_persistent22              
2Department of Physics, City College of New York, CUNY, ou_persistent22              
3The School of Chemistry, The University of Manchester, ou_persistent22              
4The University of Manchester at Harwell, ou_persistent22              
5Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
6Instituto de Ciencia Molecular (ICMol), Universitat de València, ou_persistent22              
7Department of Chemistry, Brock University, ou_persistent22              

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 Abstract: The enhancement of toroic motifs through coupling toroidal moments within molecular nanomagnets is a new, interesting and relevant approach for both fundamental research and potential quantum computation applications. We investigate a Dy8 molecular cluster and discover it has a antiferrotoroic ground state with slow magnetic relaxation. The experimental characterization of the magnetic anisotropy axes of each magnetic center and their exchange interactions represents a considerable challenge due to the non-magnetic nature of the toroidal motif. To overcome this and obtain access to the low energy states of Dy8 we establish a multi-orientation single-crystal micro Hall sensor magnetometry approach. Using an effective Hamiltonian model we then unpick the microscopic spin structure of Dy8, leading to a canted antiferrotoroidic tetramer molecular ground state. These findings are supported with electrostatic calculations that independently confirm the experimentally determined magnetic anisotropy axes for each DyIII ion within the molecule.

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Language(s): eng - English
 Dates: 2019-06-182019-07-292019-07-29
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1039/C9NR05182A
 Degree: -

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Project name : This research project has been supported by ARO W911NF-13-1-1025, NSF-DMR-1309008 and NSF-DMR-1309202, the Spanish MINECO (Grants MAT2017-89528 and CTQ2017-89993, and Excellence Unit Mariá de Maeztu MDM-2015-0538), the European Union (ERC-CoG DECRESIM647301 and COST-MOLSPIN CA15128 Molecular Spintronics Project), the Generalitat Valenciana (Prometeo Program of Excellence) and the Universitat de València (PRECOMP14-202646). J.J.B. thanks the EU for a Marie Curie Fellowship (H2020-MSCA-IF-2016-751047).
Grant ID : 751047
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Nanoscale
  Abbreviation : Nanoscale
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: - Volume / Issue: 11 (32) Sequence Number: - Start / End Page: 15131 - 15138 Identifier: ISSN: 2040-3364
CoNE: https://pure.mpg.de/cone/journals/resource/2040-3364