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Issue 26, 2020
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Magneto-optical response of chromium trihalide monolayers: chemical trends

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Abstract

Chromium trihalides (CrI3, CrBr3 and CrCl3) form a prominent family of isostructural insulating layered materials in which ferromagnetic order has been observed down to the monolayer. Here we provide a comprehensive computational study of magneto-optical properties that are used as probes for the monolayer ferromagnetic order: magnetic circular dichroism and the magneto-optic Kerr effect. Using a combination of density functional and Bethe-Salpeter theories, we calculate both the optical absorption and the magneto-optical Kerr angle spectra, including both excitonic effects and spinorial wave functions. We compare the magneto-optical response of the chromium trihalide series and we find that its strength is governed by the spin–orbit coupling of the ligand atoms (I, Br, and Cl).

Graphical abstract: Magneto-optical response of chromium trihalide monolayers: chemical trends

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Supplementary files

Article information


Submitted
13 Mar 2020
Accepted
13 May 2020
First published
14 May 2020

J. Mater. Chem. C, 2020,8, 8856-8863
Article type
Paper

Magneto-optical response of chromium trihalide monolayers: chemical trends

A. Molina-Sánchez, G. Catarina, D. Sangalli and J. Fernández-Rossier, J. Mater. Chem. C, 2020, 8, 8856
DOI: 10.1039/D0TC01322F

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