Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.matt.2020.02.021
Title: Single-Molecule Toroic Design through Magnetic Exchange Coupling
Authors: Zhang, HL
Zhai, YQ
Qin, L
Ungur, L 
Nojiri, H
Zheng, YZ
Issue Date: 3-Jun-2020
Publisher: Elsevier BV
Citation: Zhang, HL, Zhai, YQ, Qin, L, Ungur, L, Nojiri, H, Zheng, YZ (2020-06-03). Single-Molecule Toroic Design through Magnetic Exchange Coupling. Matter 2 (6) : 1481-1493. ScholarBank@NUS Repository. https://doi.org/10.1016/j.matt.2020.02.021
Abstract: The big data era calls for larger capacity of our hard drive, which in turn depends on the number of magnetic units that store bits of 1 or 0. However, as the density of these units increases, flipping one unit without affecting another becomes more difficult because of undesired magnetic perturbations from the reading/writing heads. Single-molecule toroics (SMTs) that exploit vortex-like magnetic structures are insensitive to homogeneous magnetic fields and hence are promising for next-generation ultra-dense information storage. However, the synthesis of such molecular materials is challenging. Here, we show by using ferromagnetic interactions that this target can be realized in a 16-membered heterometallic cluster {Fe8Dy8}, which shows a stable 4-fold degenerated magnetic toroidal ground state at low temperatures. This is significantly distinguished from the most studied dipole-dipole interaction-based SMTs and demonstrates a promising strategy for the next generation of SMT design.
Source Title: Matter
URI: https://scholarbank.nus.edu.sg/handle/10635/229007
ISSN: 2590-2393
2590-2385
DOI: 10.1016/j.matt.2020.02.021
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