Modification of spintronic terahertz emitter performance through defect engineering
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 re...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/142339 |
| _version_ | 1811688726911254528 |
|---|---|
| author | Nenno, Dennis M. Scheuer, Laura Sokoluk, Dominik Keller, Sascha Torosyan, Garik Brodyanski, Alexander Lösch, Jörg Battiato, Marco Rahm, Marco Binder, Rolf H. Schneider, Hans Christian Beigang, René Papaioannou, Evangelos Th. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Nenno, Dennis M. Scheuer, Laura Sokoluk, Dominik Keller, Sascha Torosyan, Garik Brodyanski, Alexander Lösch, Jörg Battiato, Marco Rahm, Marco Binder, Rolf H. Schneider, Hans Christian Beigang, René Papaioannou, Evangelos Th. |
| author_sort | Nenno, Dennis M. |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T05:36:48Z |
| format | Journal Article |
| id | ntu-10356/142339 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:36:48Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1423392023-02-28T19:45:41Z Modification of spintronic terahertz emitter performance through defect engineering Nenno, Dennis M. Scheuer, Laura Sokoluk, Dominik Keller, Sascha Torosyan, Garik Brodyanski, Alexander Lösch, Jörg Battiato, Marco Rahm, Marco Binder, Rolf H. Schneider, Hans Christian Beigang, René Papaioannou, Evangelos Th. School of Physical and Mathematical Sciences Science::Physics Spintronic Terahertz Emitter Electron 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. Published version 2020-06-19T05:07:21Z 2020-06-19T05:07:21Z 2019 Journal Article 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 2045-2322 https://hdl.handle.net/10356/142339 10.1038/s41598-019-49963-8 31527771 2-s2.0-85072302788 1 9 en Scientific Reports © 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/. application/pdf |
| spellingShingle | Science::Physics Spintronic Terahertz Emitter Electron Nenno, Dennis M. Scheuer, Laura Sokoluk, Dominik Keller, Sascha Torosyan, Garik Brodyanski, Alexander Lösch, Jörg Battiato, Marco Rahm, Marco Binder, Rolf H. Schneider, Hans Christian Beigang, René Papaioannou, Evangelos Th. Modification of spintronic terahertz emitter performance through defect engineering |
| title | Modification of spintronic terahertz emitter performance through defect engineering |
| title_full | Modification of spintronic terahertz emitter performance through defect engineering |
| title_fullStr | Modification of spintronic terahertz emitter performance through defect engineering |
| title_full_unstemmed | Modification of spintronic terahertz emitter performance through defect engineering |
| title_short | Modification of spintronic terahertz emitter performance through defect engineering |
| title_sort | modification of spintronic terahertz emitter performance through defect engineering |
| topic | Science::Physics Spintronic Terahertz Emitter Electron |
| url | https://hdl.handle.net/10356/142339 |
| work_keys_str_mv | AT nennodennism modificationofspintronicterahertzemitterperformancethroughdefectengineering AT scheuerlaura modificationofspintronicterahertzemitterperformancethroughdefectengineering AT sokolukdominik modificationofspintronicterahertzemitterperformancethroughdefectengineering AT kellersascha modificationofspintronicterahertzemitterperformancethroughdefectengineering AT torosyangarik modificationofspintronicterahertzemitterperformancethroughdefectengineering AT brodyanskialexander modificationofspintronicterahertzemitterperformancethroughdefectengineering AT loschjorg modificationofspintronicterahertzemitterperformancethroughdefectengineering AT battiatomarco modificationofspintronicterahertzemitterperformancethroughdefectengineering AT rahmmarco modificationofspintronicterahertzemitterperformancethroughdefectengineering AT binderrolfh modificationofspintronicterahertzemitterperformancethroughdefectengineering AT schneiderhanschristian modificationofspintronicterahertzemitterperformancethroughdefectengineering AT beigangrene modificationofspintronicterahertzemitterperformancethroughdefectengineering AT papaioannouevangelosth modificationofspintronicterahertzemitterperformancethroughdefectengineering |