Room-temperature spin injection from a ferromagnetic semiconductor
Abstract Spin injection using ferromagnetic semiconductors at room temperature is a building block for the realization of spin-functional semiconductor devices. Nevertheless, this has been very challenging due to the lack of reliable room-temperature ferromagnetism in well-known group IV and III-V b...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-29169-9 |
| _version_ | 1811165946194165760 |
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| author | Shobhit Goel Nguyen Huynh Duy Khang Yuki Osada Le Duc Anh Pham Nam Hai Masaaki Tanaka |
| author_facet | Shobhit Goel Nguyen Huynh Duy Khang Yuki Osada Le Duc Anh Pham Nam Hai Masaaki Tanaka |
| author_sort | Shobhit Goel |
| collection | DOAJ |
| description | Abstract Spin injection using ferromagnetic semiconductors at room temperature is a building block for the realization of spin-functional semiconductor devices. Nevertheless, this has been very challenging due to the lack of reliable room-temperature ferromagnetism in well-known group IV and III-V based semiconductors. Here, we demonstrate room-temperature spin injection by using spin pumping in a BiSb/(Ga,Fe)Sb heterostructure, where (Ga,Fe)Sb is a ferromagnetic semiconductor (FMS) with high Curie temperature (T C) and BiSb is a topological insulator (TI). Despite the very small magnetization of (Ga,Fe)Sb at room temperature (45 emu/cc), we detected spin injection from (Ga,Fe)Sb by utilizing the large inverse spin Hall effect (ISHE) in BiSb. Our study provides the first demonstration of spin injection at room temperature from a FMS. |
| first_indexed | 2024-04-10T15:44:25Z |
| format | Article |
| id | doaj.art-a354ba7caa8d4b14991c9e12764b10ff |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-10T15:44:25Z |
| publishDate | 2023-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-a354ba7caa8d4b14991c9e12764b10ff2023-02-12T12:11:16ZengNature PortfolioScientific Reports2045-23222023-02-011311910.1038/s41598-023-29169-9Room-temperature spin injection from a ferromagnetic semiconductorShobhit Goel0Nguyen Huynh Duy Khang1Yuki Osada2Le Duc Anh3Pham Nam Hai4Masaaki Tanaka5Department of Electrical Engineering and Information Systems, The University of TokyoDepartment of Electrical and Electronic Engineering, Tokyo Institute of TechnologyDepartment of Electrical and Electronic Engineering, Tokyo Institute of TechnologyDepartment of Electrical Engineering and Information Systems, The University of TokyoCREST, Japan Science and Technology AgencyDepartment of Electrical Engineering and Information Systems, The University of TokyoAbstract Spin injection using ferromagnetic semiconductors at room temperature is a building block for the realization of spin-functional semiconductor devices. Nevertheless, this has been very challenging due to the lack of reliable room-temperature ferromagnetism in well-known group IV and III-V based semiconductors. Here, we demonstrate room-temperature spin injection by using spin pumping in a BiSb/(Ga,Fe)Sb heterostructure, where (Ga,Fe)Sb is a ferromagnetic semiconductor (FMS) with high Curie temperature (T C) and BiSb is a topological insulator (TI). Despite the very small magnetization of (Ga,Fe)Sb at room temperature (45 emu/cc), we detected spin injection from (Ga,Fe)Sb by utilizing the large inverse spin Hall effect (ISHE) in BiSb. Our study provides the first demonstration of spin injection at room temperature from a FMS.https://doi.org/10.1038/s41598-023-29169-9 |
| spellingShingle | Shobhit Goel Nguyen Huynh Duy Khang Yuki Osada Le Duc Anh Pham Nam Hai Masaaki Tanaka Room-temperature spin injection from a ferromagnetic semiconductor Scientific Reports |
| title | Room-temperature spin injection from a ferromagnetic semiconductor |
| title_full | Room-temperature spin injection from a ferromagnetic semiconductor |
| title_fullStr | Room-temperature spin injection from a ferromagnetic semiconductor |
| title_full_unstemmed | Room-temperature spin injection from a ferromagnetic semiconductor |
| title_short | Room-temperature spin injection from a ferromagnetic semiconductor |
| title_sort | room temperature spin injection from a ferromagnetic semiconductor |
| url | https://doi.org/10.1038/s41598-023-29169-9 |
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