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Quantum Spin 1/2 Dimers in a Low Dimensional Tetrabromocuprate Magnet

Sampson, Gavin; Bristowe, Nicholas C.; Carr, Sam T.; Saib, Asad; Stenning, Gavin B.G.; Clark, Ewan R.; Saines, Paul James

Quantum Spin 1/2 Dimers in a Low Dimensional Tetrabromocuprate Magnet Thumbnail


Gavin Sampson

Sam T. Carr

Asad Saib

Gavin B.G. Stenning

Ewan R. Clark

Paul James Saines


This work describes a homometallic spin-urn:x-wiley:09476539:media:chem202200855:chem202200855-math-0001 tetrabromocuprate adopting a bilayer structure. Magnetic-susceptibility measurements show a broad maximum centred near 70 K, with fits to this data using a Heisenberg model consistent with strong antiferromagnetic coupling between neighbouring copper atoms in different layers of the bilayer. There are further weak intralayer ferromagnetic interactions between copper cations in neighbouring dimers. First-principles calculations are consistent with this, but suggest there is only significant magnetic coupling within one direction of a layer; this would suggest the presence of a spin ladder within the bilayer with antiferromagnetic rung and weaker ferromagnetic rail couplings.


Sampson, G., Bristowe, N. C., Carr, S. T., Saib, A., Stenning, G. B., Clark, E. R., & Saines, P. J. (2022). Quantum Spin 1/2 Dimers in a Low Dimensional Tetrabromocuprate Magnet. Chemistry - A European Journal, 28(32), Article e202200855.

Journal Article Type Article
Acceptance Date Mar 30, 2022
Online Publication Date Apr 27, 2022
Publication Date Jun 7, 2022
Deposit Date Apr 6, 2022
Publicly Available Date Jun 23, 2022
Journal Chemistry – A European Journal
Print ISSN 0947-6539
Electronic ISSN 1521-3765
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 28
Issue 32
Article Number e202200855


Published Journal Article (866 Kb)

Publisher Licence URL

Copyright Statement
&copy; 2022 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH<br /> <br /> This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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