Journal
PHYSICAL REVIEW APPLIED
Volume 13, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.13.054016
Keywords
-
Categories
Funding
- Ministry of Education, Singapore [MOE2017-T2-2-011, MOE2018-T2-1-076]
- Shenzhen Peacock Plan [KQTD2015071710313656]
- Shenzhen Science and Technology Innovation Committee [JCYJ20180504170604552]
Ask authors/readers for more resources
We report on terahertz emission from Fe-Mn-Pt/Ru/Fe-Mn-Pt and Pt/Co-Fe-B/Ru/Co-Fe-B/Pt synthetic antiferromagnet (SAF) structures upon irradiation by a femtosecond laser; the former is via the anomalous Hall effect, whereas the latter is through the inverse spin Hall effect. The antiparallel alignment of the two ferromagnetic layers leads to a terahertz emission peak amplitude that is almost double that of a corresponding single-layer or bilayer emitter with the same equivalent thickness. In addition, we demonstrate by both simulation and experiment that terahertz emission provides a powerful tool to probe the magnetization reversal processes of individual ferromagnetic layers in a SAF structure, as the terahertz signal is proportional to the vector difference (M-1 - M-2) of the magnetizations of the two ferromagnetic layers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available