Magnetic Control of Crystal Chirality and the Existence of a Large Magneto-Optical Dichroism Effect in CuB{sub 2}O{sub 4}
Journal Article
·
· Physical Review Letters
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)
The possibility of a magnetic field controlling the chirality of matter has been debated for a long time. Here, we report the successful induction of chirality in the noncentrosymmetric canted antiferromagnet, CuB{sub 2}O{sub 4}, by application of a low intensity static magnetic field. The chirality is reversed by a 90 deg. rotation of the direction of the magnetic field. The induction of chirality by a magnetic field gives rise to a gigantic enhancement of magnetochiral dichroism in this material. The ability to switch handedness in combination with this large magnetochiral optical effect allows us to design new optical devices such as a magnetically controllable isolator.
- OSTI ID:
- 21179713
- Journal Information:
- Physical Review Letters, Vol. 101, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.101.117402; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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