Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration
Abstract
The EuS/InAs interface has recently attracted attention for the possibility of inducing magnetic exchange correlations in a strong spin-orbit semiconductor, which could be useful for topological quantum devices. We use density functional theory with a machine-learned Hubbard U correction [Yu et al., npj Comput. Mater. 6, 180 (2020)] to elucidate the effect of the bonding configuration at the interface on the electronic structure. For all interface configurations considered here, we find that the EuS valence band maximum (VBM) lies below the InAs VBM. In addition, dispersed states emerge at the top of the InAs VBM at the interface, which do not exist in either material separately. These states are contributed mainly by the InAs layer adjacent to the interface. They are localized at the interface and may be attributed to charge transfer from the EuS to the InAs. The interface configuration affects the position of the EuS VBM with respect to the InAs VBM, as well as the dispersion of the interface states. For all interface configurations studied here, the induced magnetic moment in the InAs is small. Our results suggest that this interface, in its coherent form studied here, may not be promising for inducing equilibrium magnetic properties inmore »
- Authors:
-
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Univ. of Minnesota, Minneapolis, MN (United States)
- Publication Date:
- Research Org.:
- Univ. of Minnesota, Minneapolis, MN (United States); Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1852994
- Grant/Contract Number:
- SC0019274; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Materials
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 6; Journal ID: ISSN 2475-9953
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Materials Science; Electronic structure; First-principles calculations; Surface & interfacial phenomena
Citation Formats
Yu, Maituo, Moayedpour, Saeed, Yang, Shuyang, Dardzinski, Derek, Wu, Chunzhi, Pribiag, Vlad S., and Marom, Noa. Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration. United States: N. p., 2021.
Web. doi:10.1103/physrevmaterials.5.064606.
Yu, Maituo, Moayedpour, Saeed, Yang, Shuyang, Dardzinski, Derek, Wu, Chunzhi, Pribiag, Vlad S., & Marom, Noa. Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration. United States. https://doi.org/10.1103/physrevmaterials.5.064606
Yu, Maituo, Moayedpour, Saeed, Yang, Shuyang, Dardzinski, Derek, Wu, Chunzhi, Pribiag, Vlad S., and Marom, Noa. Tue .
"Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration". United States. https://doi.org/10.1103/physrevmaterials.5.064606. https://www.osti.gov/servlets/purl/1852994.
@article{osti_1852994,
title = {Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration},
author = {Yu, Maituo and Moayedpour, Saeed and Yang, Shuyang and Dardzinski, Derek and Wu, Chunzhi and Pribiag, Vlad S. and Marom, Noa},
abstractNote = {The EuS/InAs interface has recently attracted attention for the possibility of inducing magnetic exchange correlations in a strong spin-orbit semiconductor, which could be useful for topological quantum devices. We use density functional theory with a machine-learned Hubbard U correction [Yu et al., npj Comput. Mater. 6, 180 (2020)] to elucidate the effect of the bonding configuration at the interface on the electronic structure. For all interface configurations considered here, we find that the EuS valence band maximum (VBM) lies below the InAs VBM. In addition, dispersed states emerge at the top of the InAs VBM at the interface, which do not exist in either material separately. These states are contributed mainly by the InAs layer adjacent to the interface. They are localized at the interface and may be attributed to charge transfer from the EuS to the InAs. The interface configuration affects the position of the EuS VBM with respect to the InAs VBM, as well as the dispersion of the interface states. For all interface configurations studied here, the induced magnetic moment in the InAs is small. Our results suggest that this interface, in its coherent form studied here, may not be promising for inducing equilibrium magnetic properties in InAs.},
doi = {10.1103/physrevmaterials.5.064606},
journal = {Physical Review Materials},
number = 6,
volume = 5,
place = {United States},
year = {Tue Jun 29 00:00:00 EDT 2021},
month = {Tue Jun 29 00:00:00 EDT 2021}
}
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