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|Title:||Modification of spintronic terahertz emitter performance through defect engineering||Authors:||Nenno, Dennis M.
Binder, Rolf H.
Schneider, Hans Christian
Papaioannou, Evangelos Th.
|Keywords:||Science::Physics||Issue Date:||2019||Source:||Nenno, D. M., Scheuer, L., Sokoluk, D., Keller, S., Torosyan, G., Brodyanski, A., . . . Papaioannou, E. T. (2019). Modification of spintronic terahertz emitter performance through defect engineering. Scientific Reports, 9(1), 13348-. doi:10.1038/s41598-019-49963-8||Journal:||Scientific Reports||Abstract:||Spintronic ferromagnetic/non-magnetic heterostructures are novel sources for the generation of THz radiation based on spin-to-charge conversion in the layers. The key technological and scientific challenge of THz spintronic emitters is to increase their intensity and frequency bandwidth. Our work reveals the factors to engineer spintronic Terahertz generation by introducing the scattering lifetime and the interface transmission for spin polarized, non-equilibrium electrons. We clarify the influence of the electron-defect scattering lifetime on the spectral shape and the interface transmission on the THz amplitude, and how this is linked to structural defects of bilayer emitters. The results of our study define a roadmap of the properties of emitted as well as detected THz-pulse shapes and spectra that is essential for future applications of metallic spintronic THz emitters.||URI:||https://hdl.handle.net/10356/142339||ISSN:||2045-2322||DOI:||10.1038/s41598-019-49963-8||Rights:||© 2019 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SPMS Journal Articles|
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