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

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 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:

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

^[1]

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)

Publication Date:: Mon Apr 01 00:00:00 EDT 2019

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

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

OSTI Identifier:: 1594101

Report Number(s):: DOE-OSU-01304
Journal ID: ISSN 1530-6984; TRN: US2101128

Grant/Contract Number:: SC0001304; D18AP00008; DMR-1420451; CRSII2_15441; 200021E-160637

Resource Type:: Accepted Manuscript

Journal Name:: Nano Letters

Additional Journal Information:: Journal Volume: 19; Journal Issue: 5; Journal ID: ISSN 1530-6984

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; skyrmions; topological Hall effect; magnetic force microscopy; epitaxial oxide films

Citation Formats


                    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., and Yang, Fengyuan. Observation of Nanoscale Skyrmions in SrIrO3/SrRuO3 Bilayers.  United States: N. p., 2019. 
Web.  doi:10.1021/acs.nanolett.9b00596.

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                    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. Observation of Nanoscale Skyrmions in SrIrO3/SrRuO3 Bilayers.  United States.  https://doi.org/10.1021/acs.nanolett.9b00596

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                    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., and Yang, Fengyuan. Mon .  
"Observation of Nanoscale Skyrmions in SrIrO3/SrRuO3 Bilayers".  United States.  https://doi.org/10.1021/acs.nanolett.9b00596.  https://www.osti.gov/servlets/purl/1594101.

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@article{osti_1594101,

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

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

  abstractNote = {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.},

  doi          = {10.1021/acs.nanolett.9b00596},

  journal      = {Nano Letters},

  number       = 5,

  volume       = 19,

  place        = {United States},

  year         = {Mon Apr 01 00:00:00 EDT 2019},

  month        = {Mon Apr 01 00:00:00 EDT 2019}

}

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Title: Observation of Nanoscale Skyrmions in SrIrO3/SrRuO3 Bilayers

Abstract

Citation Formats

Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions journal, July 2011

Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures journal, January 2016

Blowing magnetic skyrmion bubbles journal, June 2015

Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature journal, January 2016

Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets journal, February 2016

Skyrmion flow near room temperature in an ultralow current density journal, January 2012

Noncentrosymmetric Magnets Hosting Magnetic Skyrmions journal, March 2017

Magnetic skyrmions: advances in physics and potential applications journal, June 2017

Nanoscale magnetic skyrmions in metallic films and multilayers: a new twist for spintronics journal, June 2016

Halbach Effect at the Nanoscale from Chiral Spin Textures journal, March 2018

Interface-driven topological Hall effect in SrRuO 3 -SrIrO 3 bilayer journal, July 2016

Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films journal, January 2018

Giant topological Hall effect in correlated oxide thin films journal, October 2018

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Alternative to the topological interpretation of the transverse resistivity anomalies in SrRuO 3 journal, November 2018

Lorentz transmission electron microscopy on nanometric magnetic bubbles and skyrmions in bilayered manganites La 1.2 Sr 1.8 (Mn 1−y Ru y ) 2 O 7 with controlled magnetic anisotropy journal, November 2015

Observation of Magnetic Excitations of Skyrmion Crystal in a Helimagnetic Insulator Cu 2 OSeO 3 journal, July 2012

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Y 3 Fe 5 O 12 spin pumping for quantitative understanding of pure spin transport and spin Hall effect in a broad range of materials (invited) journal, May 2015

FMR-driven spin pumping in Y 3 Fe 5 O 12 -based structures journal, May 2018

Robust Zero-Field Skyrmion Formation in FeGe Epitaxial Thin Films journal, January 2017

Tunable room-temperature magnetic skyrmions in Ir/Fe/Co/Pt multilayers journal, July 2017

Extended Skyrmion Phase in Epitaxial FeGe ( 111 ) Thin Films journal, June 2012

Negative Spin-Polarization of SrRuO 3 journal, December 2000

Magnetic force microscopy of thin film media for high density magnetic recording journal, February 1998

How to measure the local Dzyaloshinskii-Moriya Interaction in Skyrmion Thin-Film Multilayers journal, February 2019

Calculations of Stable Domain Radii Produced by Thermomagnetic Writing journal, March 1974

Magneto-optical recording journal, August 2001

Inverted hysteresis and giant exchange bias in La0.7Sr0.3MnO3/SrRuO3 superlattices journal, August 2010

A method for the calibration of magnetic force microscopy tips journal, July 2000

Electrical detection of single magnetic skyrmions in metallic multilayers at room temperature journal, January 2018

A low temperature ultrahigh vaccum scanning force microscope journal, September 1999

Magnetic force microscopy with frequency-modulated capacitive tip–sample distance control journal, January 2018

Topological Signatures in the Hall Effect of SrRuO 3 /La 0.7 Sr 0.3 MnO 3 SLs journal, December 2019

Reversible manipulation of the magnetic state in SrRuO3 through electric-field controlled proton evolution journal, January 2020

Correlation between structural phase transition and surface chemical properties of thin film SrRuO 3 /SrTiO 3 (001) journal, January 2020

High-spin state and magnetic coupling induced through interfacial orbital reconstruction observed in SrRuO 3 /LaNiO 3 superlattice journal, March 2020

Interfacial oxygen-octahedral-tilting-driven electrically tunable topological Hall effect in ultrathin SrRuO 3 films journal, July 2019

Field-sweep-rate and time dependence of transverse resistivity anomalies in ultrathin SrRu O 3 films journal, January 2020

High-spin state and magnetic coupling induced through interfacial orbital reconstruction observed in SrRuO3/LaNiO3 superlattice text, January 2020

Title: Observation of Nanoscale Skyrmions in SrIrO₃/SrRuO₃ Bilayers

Spontaneous atomic-scale magnetic skyrmion lattice in two dimensions
journal, July 2011

Room-temperature chiral magnetic skyrmions in ultrathin magnetic nanostructures
journal, January 2016

Blowing magnetic skyrmion bubbles
journal, June 2015

Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmions at room temperature
journal, January 2016

Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets
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Skyrmion flow near room temperature in an ultralow current density
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Noncentrosymmetric Magnets Hosting Magnetic Skyrmions
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Magnetic skyrmions: advances in physics and potential applications
journal, June 2017

Nanoscale magnetic skyrmions in metallic films and multilayers: a new twist for spintronics
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Halbach Effect at the Nanoscale from Chiral Spin Textures
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Interface-driven topological Hall effect in SrRuO ₃ -SrIrO ₃ bilayer
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Electric-field control of anomalous and topological Hall effects in oxide bilayer thin films
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Giant topological Hall effect in correlated oxide thin films
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Ferroelectrically tunable magnetic skyrmions in ultrathin oxide heterostructures
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Alternative to the topological interpretation of the transverse resistivity anomalies in ${SrRuO}_{3}$
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Lorentz transmission electron microscopy on nanometric magnetic bubbles and skyrmions in bilayered manganites La _1.2 Sr _1.8 (Mn _1−y Ru _y ) ₂ O ₇ with controlled magnetic anisotropy
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Observation of Magnetic Excitations of Skyrmion Crystal in a Helimagnetic Insulator ${Cu}_{2} {OSeO}_{3}$
journal, July 2012

Unlocking the potential of half-metallic ${Sr}_{2}$ ${FeMoO}_{6}$ films through controlled stoichiometry and double-perovskite ordering
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journal, May 2015

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Robust Zero-Field Skyrmion Formation in FeGe Epitaxial Thin Films
journal, January 2017

Tunable room-temperature magnetic skyrmions in Ir/Fe/Co/Pt multilayers
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Extended Skyrmion Phase in Epitaxial $FeGe (111)$ Thin Films
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Negative Spin-Polarization of ${SrRuO}_{3}$
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Magnetic force microscopy of thin film media for high density magnetic recording
journal, February 1998

How to measure the local Dzyaloshinskii-Moriya Interaction in Skyrmion Thin-Film Multilayers
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Calculations of Stable Domain Radii Produced by Thermomagnetic Writing
journal, March 1974

Magneto-optical recording
journal, August 2001

Inverted hysteresis and giant exchange bias in La0.7Sr0.3MnO3/SrRuO3 superlattices
journal, August 2010

A method for the calibration of magnetic force microscopy tips
journal, July 2000

Electrical detection of single magnetic skyrmions in metallic multilayers at room temperature
journal, January 2018

A low temperature ultrahigh vaccum scanning force microscope
journal, September 1999

Magnetic force microscopy with frequency-modulated capacitive tip–sample distance control
journal, January 2018

Topological Signatures in the Hall Effect of SrRuO ₃ /La _0.7 Sr _0.3 MnO ₃ SLs
journal, December 2019

Reversible manipulation of the magnetic state in SrRuO3 through electric-field controlled proton evolution
journal, January 2020

Correlation between structural phase transition and surface chemical properties of thin film SrRuO ₃ /SrTiO ₃ (001)
journal, January 2020

High-spin state and magnetic coupling induced through interfacial orbital reconstruction observed in SrRuO ₃ /LaNiO ₃ superlattice
journal, March 2020

Interfacial oxygen-octahedral-tilting-driven electrically tunable topological Hall effect in ultrathin SrRuO ₃ films
journal, July 2019

Field-sweep-rate and time dependence of transverse resistivity anomalies in ultrathin $SrRu O_{3}$ films
journal, January 2020

High-spin state and magnetic coupling induced through interfacial orbital reconstruction observed in SrRuO₃/LaNiO₃ superlattice
text, January 2020