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Title: Optical diode effect at spin-wave excitations in the room-temperature multiferroic BiFeO3.

Journal Article · · Physical Review Letters
 [1];  [2];  [1];  [3];  [3];  [4];  [4];  [2]
  1. Budapest University of Technology and Economics (Hungary)
  2. National Institute of Chemical Physics and Biophysics, Tallinn (Estonia)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Rutgers Univ., Piscataway, NJ (United States)

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 BiFeO3 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.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; FG02-07ER46382
OSTI ID:
1215585
Alternate ID(s):
OSTI ID: 1215777
Journal Information:
Physical Review Letters, Vol. 115, Issue 12; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 61 works
Citation information provided by
Web of Science

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Cited By (10)

A One-Way Mirror: High-Performance Terahertz Optical Isolator Based on Magnetoplasmonics journal July 2018
Near optimal graphene terahertz non-reciprocal isolator journal April 2016
Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet journal May 2017
Broken symmetries, non-reciprocity, and multiferroicity journal April 2018
Lattice and spin dynamics in multiferroic BiFeO3 and RMnO3 journal May 2019
Single-phase multiferroics: new materials, phenomena, and physics journal July 2019
Multiferroic memory effect far above the Néel temperature in single-crystal G d 0.5 D y 0.5 Mn O 3 journal September 2019
Controlling of light with electromagnons journal October 2019
Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet text January 2016
Controlling of light with electromagnons preprint January 2019

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