Emergent magnetism at the 3d-5d interface: SrMnO3/SrIrO3
Abstract
Recent experiments have found new magnetic behaviors, which are different from the parent bulk materials, at the interfaces between 3d and 5d oxides such as SrMnO3 (SMO) and SrIrO3 (SIO). The system is of considerable interest due to the strong spin-orbit coupling in the 5d materials on one hand and the double exchange physics in SMO on the other, which belongs to the class of the colossal magnetoresistive (CMR) manganites. In order to gain insight into the physics of the system, we have performed density-functional studies on a selected interface structure, viz., the (SMO)1(SIO)1 superlattice, which has been experimentally grown and studied. Our density-functional results show that the interfacial magnetism is controlled by a net charge transfer at the interface from the SIO to the SMO side, turning both of them into ferromagnetic metal from the original antiferromagnetic insulating state in the bulk. The transferred electrons to the SMO side make it ferromagnetic through the Anderson-Hasegawa double exchange interaction, while the SIO part becomes ferromagnetic due to the doping of the half-filled Mott-Hubbard insulator as suggested by the Nagaoka Theorem. Our results are discussed in the context of the experiments for the same structure.
- Authors:
-
- Univ. of Missouri, Columbia, MO (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1544227
- Grant/Contract Number:
- FG02-00ER45818
- Resource Type:
- Accepted Manuscript
- Journal Name:
- AIP Conference Proceedings
- Additional Journal Information:
- Journal Volume: none; Journal Issue: none
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Bhowal, Sayantika, and Satpathy, Sashi. Emergent magnetism at the 3d-5d interface: SrMnO3/SrIrO3. United States: N. p., 2018.
Web. doi:10.1063/1.5050724.
Bhowal, Sayantika, & Satpathy, Sashi. Emergent magnetism at the 3d-5d interface: SrMnO3/SrIrO3. United States. https://doi.org/10.1063/1.5050724
Bhowal, Sayantika, and Satpathy, Sashi. Thu .
"Emergent magnetism at the 3d-5d interface: SrMnO3/SrIrO3". United States. https://doi.org/10.1063/1.5050724. https://www.osti.gov/servlets/purl/1544227.
@article{osti_1544227,
title = {Emergent magnetism at the 3d-5d interface: SrMnO3/SrIrO3},
author = {Bhowal, Sayantika and Satpathy, Sashi},
abstractNote = {Recent experiments have found new magnetic behaviors, which are different from the parent bulk materials, at the interfaces between 3d and 5d oxides such as SrMnO3 (SMO) and SrIrO3 (SIO). The system is of considerable interest due to the strong spin-orbit coupling in the 5d materials on one hand and the double exchange physics in SMO on the other, which belongs to the class of the colossal magnetoresistive (CMR) manganites. In order to gain insight into the physics of the system, we have performed density-functional studies on a selected interface structure, viz., the (SMO)1(SIO)1 superlattice, which has been experimentally grown and studied. Our density-functional results show that the interfacial magnetism is controlled by a net charge transfer at the interface from the SIO to the SMO side, turning both of them into ferromagnetic metal from the original antiferromagnetic insulating state in the bulk. The transferred electrons to the SMO side make it ferromagnetic through the Anderson-Hasegawa double exchange interaction, while the SIO part becomes ferromagnetic due to the doping of the half-filled Mott-Hubbard insulator as suggested by the Nagaoka Theorem. Our results are discussed in the context of the experiments for the same structure.},
doi = {10.1063/1.5050724},
journal = {AIP Conference Proceedings},
number = none,
volume = none,
place = {United States},
year = {Thu Aug 16 00:00:00 EDT 2018},
month = {Thu Aug 16 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Electric field tuning of the anomalous Hall effect at oxide interfaces
journal, May 2019
- Bhowal, Sayantika; Satpathy, Sashi
- npj Computational Materials, Vol. 5, Issue 1
Electric field tuning of the anomalous Hall effect at oxide interfaces
preprint, January 2018
- Bhowal, Sayantika; Satpathy, S.
- arXiv