Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces
Abstract
Here, we show that a femtosecond spin-current pulse can generate terahertz (THz) transients at Rashba interfaces between two nonmagnetic materials. Our results unambiguously demonstrate the importance of the interface in this conversion process that we interpret in terms of the inverse Rashba Edelstein effect, in contrast to the THz emission in the bulk conversion process via the inverse spin-Hall effect. Furthermore, we show that at Rashba interfaces the THz-field amplitude can be controlled by the helicity of the light. The optical generation of electric photocurrents by these interfacial effects in the femtosecond regime will open up new opportunities in ultrafast spintronics.
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Delaware, Newark, DE (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Oakland Univ., Rochester, MI (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1444105
- Alternate Identifier(s):
- OSTI ID: 1437690
- Grant/Contract Number:
- AC02-06CH11357; SC0012509
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 120; Journal Issue: 20; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Jungfleisch, Matthias B., Zhang, Qi, Zhang, Wei, Pearson, John E., Schaller, Richard D., Wen, Haidan, and Hoffmann, Axel. Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.120.207207.
Jungfleisch, Matthias B., Zhang, Qi, Zhang, Wei, Pearson, John E., Schaller, Richard D., Wen, Haidan, & Hoffmann, Axel. Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces. United States. https://doi.org/10.1103/PhysRevLett.120.207207
Jungfleisch, Matthias B., Zhang, Qi, Zhang, Wei, Pearson, John E., Schaller, Richard D., Wen, Haidan, and Hoffmann, Axel. Fri .
"Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces". United States. https://doi.org/10.1103/PhysRevLett.120.207207. https://www.osti.gov/servlets/purl/1444105.
@article{osti_1444105,
title = {Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces},
author = {Jungfleisch, Matthias B. and Zhang, Qi and Zhang, Wei and Pearson, John E. and Schaller, Richard D. and Wen, Haidan and Hoffmann, Axel},
abstractNote = {Here, we show that a femtosecond spin-current pulse can generate terahertz (THz) transients at Rashba interfaces between two nonmagnetic materials. Our results unambiguously demonstrate the importance of the interface in this conversion process that we interpret in terms of the inverse Rashba Edelstein effect, in contrast to the THz emission in the bulk conversion process via the inverse spin-Hall effect. Furthermore, we show that at Rashba interfaces the THz-field amplitude can be controlled by the helicity of the light. The optical generation of electric photocurrents by these interfacial effects in the femtosecond regime will open up new opportunities in ultrafast spintronics.},
doi = {10.1103/PhysRevLett.120.207207},
journal = {Physical Review Letters},
number = 20,
volume = 120,
place = {United States},
year = {Fri May 18 00:00:00 EDT 2018},
month = {Fri May 18 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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Figures / Tables found in this record: