Observation of Nanoscale Skyrmions in SrIrO3/SrRuO3 Bilayers

Meng, Keng-Yuan; Ahmed, Adam S.; Baćani, Mirko; Mandru, Andrada-Oana; Zhao, Xue; Bagués, Núria; Esser, Bryan D.; Flores, Jose; McComb, David W.; Hug, Hans J.; Yang, Fengyuan

doi:10.1021/acs.nanolett.9b00596

Observation of Nanoscale Skyrmions in SrIrO₃/SrRuO₃ Bilayers

Journal Article · Mon Apr 01 00:00:00 EDT 2019 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.9b00596· OSTI ID:1594101

Meng, Keng-Yuan ^[1]; Ahmed, Adam S. ^[2]; Baćani, Mirko ^[3]; Mandru, Andrada-Oana ^[3]; Zhao, Xue ^[3]; Bagués, Núria ^[2]; Esser, Bryan D. ^[2]; Flores, Jose ^[2]; McComb, David W. ^[2]; Hug, Hans J. ^[4]; ^[2]

The Ohio State Univ., Columbus, OH (United States); The Ohio State University
The Ohio State Univ., Columbus, OH (United States)
Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf (Switzerland)
Swiss Federal Laboratories for Materials Science and Technology (Empa), Dübendorf (Switzerland); Univ. of Basel (Switzerland)

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.

View Accepted Manuscript (DOE)

Research Organization:: The Ohio State Univ., Columbus, OH (United States)

Sponsoring Organization:: Defense Advanced Research Projects Agency (DARPA); National Science Foundation (NSF); Swiss National Science Foundation (SNSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001304

OSTI ID:: 1594101

Report Number(s):: DOE-OSU--01304

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 5 Vol. 19; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Topological Signatures in the Hall Effect of SrRuO ₃ /La _0.7 Sr _0.3 MnO ₃ SLs Ziese, Michael; Bern, Francis; Esquinazi, Pablo D. physica status solidi (b), Vol. 257, Issue 7 https://doi.org/10.1002/pssb.201900628	journal	December 2019
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High-spin state and magnetic coupling induced through interfacial orbital reconstruction observed in SrRuO ₃ /LaNiO ₃ superlattice Liu, Peng; Ning, Xingkun Materials Research Letters, Vol. 8, Issue 5 https://doi.org/10.1080/21663831.2020.1727971	journal	March 2020
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