Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect
Abstract The terahertz (THz) spectral zone is one of the most exciting but least explored domains of the electromagnetic spectrum. To extend the applicability of THz waves, the present objective is to develop an efficient, compact, durable, and low-cost THz emitter source. A spintronic THz emitter c...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-06-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-024-00545-9 |
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| author | Ruma Mandal Ren Momma Kazuaki Ishibashi Satoshi Iihama Kazuya Suzuki Shigemi Mizukami |
| author_facet | Ruma Mandal Ren Momma Kazuaki Ishibashi Satoshi Iihama Kazuya Suzuki Shigemi Mizukami |
| author_sort | Ruma Mandal |
| collection | DOAJ |
| description | Abstract The terahertz (THz) spectral zone is one of the most exciting but least explored domains of the electromagnetic spectrum. To extend the applicability of THz waves, the present objective is to develop an efficient, compact, durable, and low-cost THz emitter source. A spintronic THz emitter consisting of a ferromagnetic/nonmagnetic bilayer heterostructure is a promising innovation that can provide an alternative solution/replacement for conventional THz emitters. To further develop these spin-based THz emitters, we demonstrate an efficient and strong THz emission from a single layer of Co2MnGa with a large anomalous Hall effect (AHE) influenced by its Weyl semimetallic nature. Strong correlations among the THz emission, AHE, and chemical ordering of the full Heusler crystal structures for Co2MnGa are shown. Based on proper structural and chemical design, the topological nature of this material facilitates systematic optimization. Our initial findings provide a new design concept for the topological influences on spin-based THz emitters, and these emitters are expected to facilitate the further development of the intriguing Weyl physics. |
| format | Article |
| id | doaj-art-b490d0f303be445b8c15275f74a8a549 |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-b490d0f303be445b8c15275f74a8a5492025-01-19T12:28:42ZengNature PortfolioNPG Asia Materials1884-40572024-06-0116111110.1038/s41427-024-00545-9Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effectRuma Mandal0Ren Momma1Kazuaki Ishibashi2Satoshi Iihama3Kazuya Suzuki4Shigemi Mizukami5WPI Advanced Institute for Materials Research (AIMR), Tohoku UniversityWPI Advanced Institute for Materials Research (AIMR), Tohoku UniversityWPI Advanced Institute for Materials Research (AIMR), Tohoku UniversityWPI Advanced Institute for Materials Research (AIMR), Tohoku UniversityWPI Advanced Institute for Materials Research (AIMR), Tohoku UniversityWPI Advanced Institute for Materials Research (AIMR), Tohoku UniversityAbstract The terahertz (THz) spectral zone is one of the most exciting but least explored domains of the electromagnetic spectrum. To extend the applicability of THz waves, the present objective is to develop an efficient, compact, durable, and low-cost THz emitter source. A spintronic THz emitter consisting of a ferromagnetic/nonmagnetic bilayer heterostructure is a promising innovation that can provide an alternative solution/replacement for conventional THz emitters. To further develop these spin-based THz emitters, we demonstrate an efficient and strong THz emission from a single layer of Co2MnGa with a large anomalous Hall effect (AHE) influenced by its Weyl semimetallic nature. Strong correlations among the THz emission, AHE, and chemical ordering of the full Heusler crystal structures for Co2MnGa are shown. Based on proper structural and chemical design, the topological nature of this material facilitates systematic optimization. Our initial findings provide a new design concept for the topological influences on spin-based THz emitters, and these emitters are expected to facilitate the further development of the intriguing Weyl physics.https://doi.org/10.1038/s41427-024-00545-9 |
| spellingShingle | Ruma Mandal Ren Momma Kazuaki Ishibashi Satoshi Iihama Kazuya Suzuki Shigemi Mizukami Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect NPG Asia Materials |
| title | Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect |
| title_full | Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect |
| title_fullStr | Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect |
| title_full_unstemmed | Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect |
| title_short | Topologically influenced terahertz emission in Co2MnGa with a large anomalous Hall effect |
| title_sort | topologically influenced terahertz emission in co2mnga with a large anomalous hall effect |
| url | https://doi.org/10.1038/s41427-024-00545-9 |
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