Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn
| العنوان: | Readout of an antiferromagnetic spintronics system by strong exchange coupling of Mn |
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| المؤلفون: | Bommanaboyena, S. P., Backes, D., Veiga, L. S. I., Dhesi, S. S., Niu, Y. R., Sarpi, B., Denneulin, T., Kovács, A., Mashoff, T., Gomonay, O., Sinova, J., Everschor-Sitte, K., Schönke, D., Reeve, R. M., Kläui, M., Elmers, H.-J., Jourdan, M. |
| المصدر: | Nature Communications 12(1), 6539 (2021). doi:10.1038/s41467-021-26892-7 Nature Communications Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021) |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Condensed Matter::Materials Science, Physics::Instrumentation and Detectors, 530 Physics, Science, Astrophysics::Instrumentation and Methods for Astrophysics, Magnetic devices, Condensed Matter::Strongly Correlated Electrons, Spintronics, ddc:500, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, 530 Physik, Article |
| الوصف: | In antiferromagnetic spintronics, the read-out of the staggered magnetization or Néel vector is the key obstacle to harnessing the ultra-fast dynamics and stability of antiferromagnets for novel devices. Here, we demonstrate strong exchange coupling of Mn2Au, a unique metallic antiferromagnet that exhibits Néel spin-orbit torques, with thin ferromagnetic Permalloy layers. This allows us to benefit from the well-established read-out methods of ferromagnets, while the essential advantages of antiferromagnetic spintronics are only slightly diminished. We show one-to-one imprinting of the antiferromagnetic on the ferromagnetic domain pattern. Conversely, alignment of the Permalloy magnetization reorients the Mn2Au Néel vector, an effect, which can be restricted to large magnetic fields by tuning the ferromagnetic layer thickness. To understand the origin of the strong coupling, we carry out high resolution electron microscopy imaging and we find that our growth yields an interface with a well-defined morphology that leads to the strong exchange coupling. Antiferromagnets offer faster operation speed and immunity to stray fields, however, readout of the Neel vector is difficult. Here, Bommanaboyena et al present a heterostructure of a ferromagnet and antiferromagnet, combining easy readout with the benefits of antiferromagnetic spintronics. |
| تدمد: | 2041-1723 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af554718d4061db968d3788ae9406c42 https://pubmed.ncbi.nlm.nih.gov/34764314 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....af554718d4061db968d3788ae9406c42 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 20411723 |
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