Observation of Nanoscale Skyrmions in SrIrO3                                                 /SrRuO3                                                  Bilayers

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

doi:10.1021/acs.nanolett.9b00596

Observation of Nanoscale Skyrmions in SrIrO₃ /SrRuO₃ Bilayers

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

Research output: Contribution to journal › Article › Research › peer-review

Abstract

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 SrIrO ₃ /SrRuO ₃ (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.

Original language	English
Pages (from-to)	3169-3175
Number of pages	7
Journal	Nano Letters
Volume	19
Issue number	5
DOIs	https://doi.org/10.1021/acs.nanolett.9b00596
Publication status	Published - 8 May 2019
Externally published	Yes

Keywords

epitaxial oxide films
magnetic force microscopy
Skyrmions
topological Hall effect

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10.1021/acs.nanolett.9b00596

Cite this

Meng, K. Y., Ahmed, A. S., Baćani, M., Mandru, A. O., Zhao, X., Bagués, N., Esser, B. D., Flores, J., McComb, D. W., Hug, H. J., & Yang, F. (2019). Observation of Nanoscale Skyrmions in SrIrO₃ /SrRuO₃ Bilayers. Nano Letters, 19(5), 3169-3175. https://doi.org/10.1021/acs.nanolett.9b00596

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title = "Observation of Nanoscale Skyrmions in SrIrO3 /SrRuO3 Bilayers",

abstract = " 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 SrIrO 3 /SrRuO 3 (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. ",

keywords = "epitaxial oxide films, magnetic force microscopy, Skyrmions, topological Hall effect",

author = "Meng, \{Keng Yuan\} and Ahmed, \{Adam S.\} and Mirko Ba{\'c}ani and Mandru, \{Andrada Oana\} and Xue Zhao and N{\'u}ria Bagu{\'e}s and Esser, \{Bryan D.\} and Jose Flores and McComb, \{David W.\} and Hug, \{Hans J.\} and Fengyuan Yang",

year = "2019",

month = may,

day = "8",

doi = "10.1021/acs.nanolett.9b00596",

language = "English",

volume = "19",

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Meng, KY, Ahmed, AS, Baćani, M, Mandru, AO, Zhao, X, Bagués, N, Esser, BD, Flores, J, McComb, DW, Hug, HJ & Yang, F 2019, 'Observation of Nanoscale Skyrmions in SrIrO₃ /SrRuO₃ Bilayers', Nano Letters, vol. 19, no. 5, pp. 3169-3175. https://doi.org/10.1021/acs.nanolett.9b00596

TY - JOUR

T1 - Observation of Nanoscale Skyrmions in SrIrO3 /SrRuO3 Bilayers

AU - Meng, Keng Yuan

AU - Ahmed, Adam S.

AU - Baćani, Mirko

AU - Mandru, Andrada Oana

AU - Zhao, Xue

AU - Bagués, Núria

AU - Esser, Bryan D.

AU - Flores, Jose

AU - McComb, David W.

AU - Hug, Hans J.

AU - Yang, Fengyuan

PY - 2019/5/8

Y1 - 2019/5/8

N2 - 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 SrIrO 3 /SrRuO 3 (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.

AB - 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 SrIrO 3 /SrRuO 3 (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.

KW - epitaxial oxide films

KW - magnetic force microscopy

KW - Skyrmions

KW - topological Hall effect

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DO - 10.1021/acs.nanolett.9b00596

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SN - 1530-6984

VL - 19

SP - 3169

EP - 3175

JO - Nano Letters

JF - Nano Letters

IS - 5

ER -

Observation of Nanoscale Skyrmions in SrIrO3 /SrRuO3 Bilayers

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Observation of Nanoscale Skyrmions in SrIrO₃ /SrRuO₃ Bilayers