Journal
NANO LETTERS
Volume 19, Issue 5, Pages 3169-3175Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.9b00596
Keywords
Skyrmions; topological Hall effect; magnetic force microscopy; epitaxial oxide films
Categories
Funding
- DARPA [D18AP00008]
- Center for Emergent Materials, an NSF [DMR-1420451]
- Department of Energy (DOE), Office of Science, Basic Energy Sciences [DE-SC0001304]
- Swiss National Science Foundation [CRSII2_15441, 200021E-160637]
- Swiss National Science Foundation (SNF) [200021E-160637] Funding Source: Swiss National Science Foundation (SNF)
Ask authors/readers for more resources
Skyrmion imaging and electrical detection via topological Hall (TH) effect are two primary techniques for probing magnetic skyrmions, which hold promise for next-generation magnetic storage. However, these two kinds of complementary techniques have rarely been employed to investigate the same samples. We report the observation of nanoscale skyrmions in SrIrO3/SrRuO3 (SIO/SRO) bilayers in a wide temperature range from 10 to 100 K. The SIO/SRO bilayers exhibit a remarkable TH effect, which is up to 200% larger than the anomalous Hall (AH) effect at 5 K, and zero-field TH effect at 90 K. Using variable-temperature, high-field magnetic force microscopy (MFM), we imaged skyrmions as small as 10 nm, which emerge in the same field ranges as the TH effect. These results reveal a rich space for skyrmion exploration and tunability in oxide heterostructures.
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