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Article Dans Une Revue Science Advances Année : 2021

Validation of microscopic magnetochiral dichroism theory

Résumé

Magnetochiral dichroism (MChD), a fascinating manifestation of the light-matter interaction characteristic for chiral systems under magnetic fields, has become a well-established optical phenomenon reported for many different materials. However, its interpretation remains essentially phenomenological and qualitative, because the existing microscopic theory has not been quantitatively confirmed by confronting calculations based on this theory with experimental data. Here, we report the experimental low-temperature MChD spectra of two archetypal chiral paramagnetic crystals taken as model systems, tris(1,2-diaminoethane)nickel(II) and cobalt(II) nitrate, for light propagating parallel or perpendicular to the c axis of the crystals, and the calculation of the MChD spectra for the Ni(II) derivative by state-of-the-art quantum chemical calculations. By incorporating vibronic coupling, we find good agreement between experiment and theory, which opens the way for MChD to develop into a powerful chiral spectroscopic tool and provide fundamental insights for the chemical design of new magnetochiral materials for technological applications.

Domaines

Matériaux
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Origine : Publication financée par une institution

Dates et versions

hal-03213607 , version 1 (03-05-2021)

Identifiants

Citer

Matteo Atzori, Herbert Ludowieg, Ángela Valentín-Pérez, Miguel Cortijo, Ivan Breslavetz, et al.. Validation of microscopic magnetochiral dichroism theory. Science Advances , 2021, 7 (17), eabg2859 (8 p.). ⟨10.1126/sciadv.abg2859⟩. ⟨hal-03213607⟩
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