First-principles approach to the dynamic magnetoelectric couplings for the non-reciprocal directional dichroism in BiFeO3
Abstract
Due to the complicated magnetic and crystallographic structures of BiFeO3, its magnetoelectric (ME) couplings and microscopic model Hamiltonian remain poorly understood. By employing a firstprinciples approach, we uncover all possibleMEcouplings associated with the spin-current (SC) and exchange-striction (ES) polarizations, and construct an appropriate Hamiltonian for the long-range spin-cycloid in BiFeO3. First-principles calculations are used to understand the microscopic origins of theMEcouplings.Wefind that inversion symmetries broken by ferroelectric and antiferroelectric distortions induce the SC and the ES polarizations, which cooperatively produce the dynamicME effects in BiFeO3. A model motivated by first principles reproduces the absorption difference of counter-propagating light beams called non-reciprocal directional dichroism. The current paper focuses on the spin-driven (SD) polarizations produced by a dynamic electric field, i.e. the dynamic MEcouplings. Due to the inertial properties of Fe, the dynamic SD polarizations differ significantly from the static SD polarizations. Our systematic approach can be generally applied to any multiferroic material, laying the foundation for revealing hiddenMEcouplings on the atomic scale and for exploiting opticalMEeffects in the next generation of technological devices such as optical diodes.
- Authors:
-
- Budapest Univ. of Technology and Economics, Budapest (Hungary)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1261366
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- New Journal of Physics
- Additional Journal Information:
- Journal Volume: 18; Journal ID: ISSN 1367-2630
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Kezsmarki, I., and Fishman, Randy Scott. First-principles approach to the dynamic magnetoelectric couplings for the non-reciprocal directional dichroism in BiFeO3. United States: N. p., 2016.
Web. doi:10.1088/1367-2630/18/4/043025.
Kezsmarki, I., & Fishman, Randy Scott. First-principles approach to the dynamic magnetoelectric couplings for the non-reciprocal directional dichroism in BiFeO3. United States. https://doi.org/10.1088/1367-2630/18/4/043025
Kezsmarki, I., and Fishman, Randy Scott. Mon .
"First-principles approach to the dynamic magnetoelectric couplings for the non-reciprocal directional dichroism in BiFeO3". United States. https://doi.org/10.1088/1367-2630/18/4/043025. https://www.osti.gov/servlets/purl/1261366.
@article{osti_1261366,
title = {First-principles approach to the dynamic magnetoelectric couplings for the non-reciprocal directional dichroism in BiFeO3},
author = {Kezsmarki, I. and Fishman, Randy Scott},
abstractNote = {Due to the complicated magnetic and crystallographic structures of BiFeO3, its magnetoelectric (ME) couplings and microscopic model Hamiltonian remain poorly understood. By employing a firstprinciples approach, we uncover all possibleMEcouplings associated with the spin-current (SC) and exchange-striction (ES) polarizations, and construct an appropriate Hamiltonian for the long-range spin-cycloid in BiFeO3. First-principles calculations are used to understand the microscopic origins of theMEcouplings.Wefind that inversion symmetries broken by ferroelectric and antiferroelectric distortions induce the SC and the ES polarizations, which cooperatively produce the dynamicME effects in BiFeO3. A model motivated by first principles reproduces the absorption difference of counter-propagating light beams called non-reciprocal directional dichroism. The current paper focuses on the spin-driven (SD) polarizations produced by a dynamic electric field, i.e. the dynamic MEcouplings. Due to the inertial properties of Fe, the dynamic SD polarizations differ significantly from the static SD polarizations. Our systematic approach can be generally applied to any multiferroic material, laying the foundation for revealing hiddenMEcouplings on the atomic scale and for exploiting opticalMEeffects in the next generation of technological devices such as optical diodes.},
doi = {10.1088/1367-2630/18/4/043025},
journal = {New Journal of Physics},
number = ,
volume = 18,
place = {United States},
year = {Mon Apr 18 00:00:00 EDT 2016},
month = {Mon Apr 18 00:00:00 EDT 2016}
}
Web of Science
Works referencing / citing this record:
Vibrational spectra of multiferroics with Y- and Z-type hexaferrite structures
journal, August 2018
- Kamba, Stanislav; Borodavka, Fedir; Kadlec, Filip
- Ferroelectrics, Vol. 532, Issue 1
Lattice and spin dynamics in multiferroic BiFeO3 and RMnO3
journal, May 2019
- Song, Yan; Xu, Ben; Nan, Ce-Wen
- National Science Review, Vol. 6, Issue 4
Electromagnon in the Y-type hexaferrite
journal, April 2018
- Vít, Jakub; Kadlec, Filip; Kadlec, Christelle
- Physical Review B, Vol. 97, Issue 13