Journal
AIP ADVANCES
Volume 12, Issue 3, Pages -Publisher
AIP Publishing
DOI: 10.1063/9.0000300
Keywords
-
Funding
- JST-CREST [JPMJCR14F1]
- KAKENHI [17H03240, 20H02185, 21K18735]
- Grants-in-Aid for Scientific Research [21K18735, 20H02185, 17H03240] Funding Source: KAKEN
Ask authors/readers for more resources
In this study, we report the experimental results of a [GeTe/Sb2Te3] superlattice with a topologically protected spin diffusion length exceeding 100 μm at room temperature. By using a TbFeCo film for laser-induced spin injection into the superlattice, we successfully obtained spin injection signals between TbFeCo and Pt bars without electric current. This research provides a useful method for future low-energy spintronics devices.
A [GeTe/Sb2Te3] superlattice is known as a topological insulator and it shows magnetic responses such as magneto-optical effect although it does not contain any magnetic element. We reported the superlattice has topologically protected spin diffusion length more than 100 mu m at room temperature. In this paper, we show a laser induced spin injection to the superlattice using a TbFeCo film. We got spin injection signals between the TbFeCo and the Pt bars through the superlattice without electric current. The signals showed the maximum value of 0.06 mu V around laser power of 1.0 mW which was focused to a spot diameter of 0.7 mu m. The laser induced spin injection method will be one of the useful methods for future low-energy spintronics devices. (c) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/9.0000300
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