Magneto-chiral birefringence and dichroism

Barron, L.D. and Vrbancich, J. (1984) Magneto-chiral birefringence and dichroism. Molecular Physics, 51(3), pp. 715-730. (doi:10.1080/00268978400100481)

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Abstract

It was pointed out recently that the absorption coefficient of a chiral molecule should be shifted slightly in a magnetic field parallel to a light beam in any polarization state. This suggestion is developed further by considering an analogous refractive index shift and by discussing these magneto-chiral phenomena in the unified context of effects generated by the ‘magnetic’ (time-odd) parts of the complex optical activity tensors. Explicit expressions, in terms of molecular property tensors, are derived for the difference in refractive index and absorption coefficient of a chiral molecule in a magnetic field parallel and antiparallel to the light beam, and magneto-chiral analogues of the Faraday A-, B- and C-terms introduced. A rough estimate of the magneto-chiral birefringence indicates that it should be observable using a modified Rayleigh refractometer. The feasibility of observing magneto-chiral dichroism A-, B- and C-terms in different types of chiral molecules is also considered. The magneto-chiral observables are shown to transform as time-odd polar vectors.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barron, Professor Laurence
Authors: Barron, L.D., and Vrbancich, J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Molecular Physics
Publisher:Taylor & Francis
ISSN:0026-8976
ISSN (Online):1362-3028

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