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

Overview

Journal Chemistry

Specialty Chemistry

Date 2022 Mar 31

PMID 35357728

Authors

Gavin Sampson

Nicholas C Bristowe

Sam T Carr

Asad Saib

Gavin B G Stenning

Ewan R Clark

Paul J Saines

Affiliations

Soon will be listed here.

Abstract

This work describes a homometallic spin- 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.

Citing Articles

Low-Temperature Ferromagnetic Order in a Two-Level Layered Co Material.

Doheny P, Stenning G, Brookfield A, Orlandi F, Collison D, Manuel P Chem Mater. 2024; 36(17):8208-8216.

PMID: 39279907 PMC: 11393796. DOI: 10.1021/acs.chemmater.4c00596.

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

Sampson G, Bristowe N, Carr S, Saib A, Stenning G, Clark E Chemistry. 2022; 28(32):e202200855.

PMID: 35357728 PMC: 9323490. DOI: 10.1002/chem.202200855.

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