Broken symmetries, non-reciprocity, and multiferroicity

Abstract The interplay of space and time symmetries, ferroic properties, chirality and notions of reciprocity determines many of the technologically important properties of materials such as optical diode effect, e.g., in polar ferromagnet FeZnMo 3 O 8 . We illustrate these concepts, including the n...

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Bibliographic Details
Published in:npj quantum materials 2018-04, Vol.3 (1), Article 19
Main Authors: Cheong, Sang-Wook, Talbayev, Diyar, Kiryukhin, Valery, Saxena, Avadh
Format: Article
Language:English
Subjects:
Broken symmetry
Chirality
Dichroism
Ferromagnetism
High temperature
Material properties
MATERIALS SCIENCE
Optical properties
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Reciprocity
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Summary:Abstract The interplay of space and time symmetries, ferroic properties, chirality and notions of reciprocity determines many of the technologically important properties of materials such as optical diode effect, e.g., in polar ferromagnet FeZnMo 3 O 8 . We illustrate these concepts, including the non-reciprocal directional dichroism, through a number of practical examples. In particular, the conditions for non-reciprocity of ferro-rotational order are discussed and the possible use of linear optical gyration is suggested as a way to detect ferro-rotational domains. In addition, we provide the means to achieve high-temperature optical diode effect and elucidate multiferroic behaviors as a result of helical vs. cycloidal spins. Finally, we identify different entities behaving similarly under all symmetry operations, which are useful to understand non-reciprocity and multiferroicity in various materials intuitively.
ISSN:2397-4648
2397-4648
DOI:10.1038/s41535-018-0092-5