Optical diode effect at spin-wave excitations in the room-temperature multiferroic BiFeO<sub>3</sub> [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- Article numbers 127,203 : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory
United States. Department of Energy. Office of Science
United States. Department of Energy. Office of Scientific and Technical Information
- The ability to read and write a magnetic state current-free by an electric voltage would provide a huge technological advantage. Dynamic or optical ME effects are equally interesting, because they give rise to unidirectional light propagation as recently observed in low-temperature multiferroics. This phenomenon, if realized at room temperature, would allow the development of optical diodes which transmit unpolarized light in one, but not in the opposite, direction. Here, we report strong unidirectional transmission in the room-temperature multiferroic BiFeO<sub>3</sub> over the gigahertz-terahertz frequency range. The supporting theory attributes the observed unidirectional transmission to the spin-current-driven dynamic ME effect. Our findings are an important step toward the realization of optical diodes, supplemented by the ability to switch the transmission direction with a magnetic or electric field.
- Published through SciTech Connect.
Physical Review Letters 115 12 ISSN 0031-9007 AM
Kezsmarki, I. [Budapest University of Technology and Economics]; Nagel, U. [National Institute of Chemical Physics and Biophysics, Estonia]; Bordacs, S. [Budapest University of Technology and Economics]; Fishman, Randy Scott [ORNL]; Lee, Jun Hee [ORNL]; Yi, Hee; Cheong, Sang-Wook [Rutgers University]; Room, T. [National Institute of Chemical Physics and Biophysics, Estonia].
- Funding Information:
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