skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on December 5, 2020

Title: Evidence of the Topological Hall Effect in Pt/Antiferromagnetic Insulator Bilayers

Abstract

The topological Hall effect has been a primary indicator of nontrivial spin textures in magnetic materials. We observe the evidence of the topological Hall effect in Pt/Cr 2O 3 bilayers grown on Al 2O 3 (0001) and Al 2O 3 (112¯0), where the Cr 2O 3 epitaxial film is an antiferromagnetic insulator. The Pt/Cr 2O 3 bilayers exhibit topological Hall resistivity for Cr 2O 3 thicknesses below 6 nm near and above room temperature, which is above the Neel temperature of Cr 2O 3, revealing the key role of thermal fluctuations in the formation of spin textures. In conclusion, the similarity of topological Hall signals in (0001)- and (112¯0)-oriented Cr 2O 3 films indicates that the emergence of spin textures is insensitive to crystalline orientation.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. The Ohio State Univ., Columbus, OH (United States)
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1594162
Report Number(s):
DOE-OSU-01304
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
SC0001304; D18AP00008
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 123; Journal Issue: 23; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Antiferromagnetic insulator; Topological Hall effect; Antiferromagnetism; Skyrmions; Spin Hall effect; Spin texture; Spin torque; Monte Carlo methods; Sputtering

Citation Formats

Cheng, Yang, Yu, Sisheng, Zhu, Menglin, Hwang, Jinwoo, and Yang, Fengyuan. Evidence of the Topological Hall Effect in Pt/Antiferromagnetic Insulator Bilayers. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.237206.
Cheng, Yang, Yu, Sisheng, Zhu, Menglin, Hwang, Jinwoo, & Yang, Fengyuan. Evidence of the Topological Hall Effect in Pt/Antiferromagnetic Insulator Bilayers. United States. doi:10.1103/PhysRevLett.123.237206.
Cheng, Yang, Yu, Sisheng, Zhu, Menglin, Hwang, Jinwoo, and Yang, Fengyuan. Thu . "Evidence of the Topological Hall Effect in Pt/Antiferromagnetic Insulator Bilayers". United States. doi:10.1103/PhysRevLett.123.237206.
@article{osti_1594162,
title = {Evidence of the Topological Hall Effect in Pt/Antiferromagnetic Insulator Bilayers},
author = {Cheng, Yang and Yu, Sisheng and Zhu, Menglin and Hwang, Jinwoo and Yang, Fengyuan},
abstractNote = {The topological Hall effect has been a primary indicator of nontrivial spin textures in magnetic materials. We observe the evidence of the topological Hall effect in Pt/Cr2O3 bilayers grown on Al2O3 (0001) and Al2O3 (112¯0), where the Cr2O3 epitaxial film is an antiferromagnetic insulator. The Pt/Cr2O3 bilayers exhibit topological Hall resistivity for Cr2O3 thicknesses below 6 nm near and above room temperature, which is above the Neel temperature of Cr2O3, revealing the key role of thermal fluctuations in the formation of spin textures. In conclusion, the similarity of topological Hall signals in (0001)- and (112¯0)-oriented Cr2O3 films indicates that the emergence of spin textures is insensitive to crystalline orientation.},
doi = {10.1103/PhysRevLett.123.237206},
journal = {Physical Review Letters},
number = 23,
volume = 123,
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on December 5, 2020
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Critical properties of the model of antiferromagnet Cr2O3
journal, May 1999

  • Murtazaev, A. K.
  • Low Temperature Physics, Vol. 25, Issue 5
  • DOI: 10.1063/1.593747

Noncentrosymmetric Magnets Hosting Magnetic Skyrmions
journal, March 2017

  • Kanazawa, Naoya; Seki, Shinichiro; Tokura, Yoshinori
  • Advanced Materials, Vol. 29, Issue 25
  • DOI: 10.1002/adma.201603227

Inelastic neutron scattering investigation of spin waves and magnetic interactions in Cr2O3
journal, July 1970


Room-Temperature Skyrmions in an Antiferromagnet-Based Heterostructure
journal, January 2018


Metallic ferromagnetic films with magnetic damping under 1.4 × 10−3
journal, August 2017


Negative spin Hall magnetoresistance in antiferromagnetic Cr 2 O 3 /Ta bilayer at low temperature region
journal, June 2018

  • Ji, Yang; Miao, J.; Zhu, Y. M.
  • Applied Physics Letters, Vol. 112, Issue 23
  • DOI: 10.1063/1.5026555

Coherent terahertz control of antiferromagnetic spin waves
journal, November 2010


Thickness dependence of the interfacial Dzyaloshinskii–Moriya interaction in inversion symmetry broken systems
journal, July 2015

  • Cho, Jaehun; Kim, Nam-Hui; Lee, Sukmock
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8635

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


Antiferromagnetic spintronics
journal, February 2018


Spin-Hall Topological Hall Effect in Highly Tunable Pt/Ferrimagnetic-Insulator Bilayers
journal, July 2019


Towards control of the size and helicity of skyrmions in helimagnetic alloys by spin–orbit coupling
journal, September 2013


Thermally driven topology in chiral magnets
journal, October 2017


Topological thermal Hall effect driven by spin-chirality fluctuations in frustrated antiferromagnets
journal, February 2019


Hund’s Rule-Driven Dzyaloshinskii-Moriya Interaction at 3 d 5 d Interfaces
journal, December 2016


Unlocking the potential of half-metallic Sr 2 FeMoO 6 films through controlled stoichiometry and double-perovskite ordering
journal, January 2011

  • Hauser, Adam J.; Williams, Robert E. A.; Ricciardo, Rebecca A.
  • Physical Review B, Vol. 83, Issue 1
  • DOI: 10.1103/PhysRevB.83.014407

Spin Chirality, Berry Phase, and Anomalous Hall Effect in a Frustrated Ferromagnet
journal, March 2001


Thermal Generation of Spin Current in an Antiferromagnet
journal, December 2015


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

  • Yang, Fengyuan; Chris Hammel, P.
  • Journal of Physics D: Applied Physics, Vol. 51, Issue 25
  • DOI: 10.1088/1361-6463/aac249

Large topological Hall effect in the non-collinear phase of an antiferromagnet
journal, March 2014

  • Sürgers, Christoph; Fischer, Gerda; Winkel, Patrick
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms4400

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


Antiferromagnetic skyrmion crystals: Generation, topological Hall, and topological spin Hall effect
journal, August 2017


Antiferromagnetic Skyrmion: Stability, Creation and Manipulation
journal, April 2016

  • Zhang, Xichao; Zhou, Yan; Ezawa, Motohiko
  • Scientific Reports, Vol. 6, Issue 1
  • DOI: 10.1038/srep24795

Supervised learning approach for recognizing magnetic skyrmion phases
journal, November 2018


Topological Transitions Induced by Antiferromagnetism in a Thin-Film Topological Insulator
journal, August 2018


Imaging and Control of Surface Magnetization Domains in a Magnetoelectric Antiferromagnet
journal, February 2011


Strain-Induced Néel Temperature Enhancement in Corundum-Type Cr 2 O 3 and Fe 2 O 3
journal, November 2013

  • Kota, Yohei; Imamura, Hiroshi; Sasaki, Munetaka
  • Applied Physics Express, Vol. 6, Issue 11
  • DOI: 10.7567/APEX.6.113007

Magnetization at the interface of Cr 2 O 3 and paramagnets with large stoner susceptibility
journal, February 2017

  • Cao, Shi; Street, M.; Wang, Junlei
  • Journal of Physics: Condensed Matter, Vol. 29, Issue 10
  • DOI: 10.1088/1361-648X/aa58ba

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


Room-temperature antiferromagnetic memory resistor
journal, January 2014

  • Marti, X.; Fina, I.; Frontera, C.
  • Nature Materials, Vol. 13, Issue 4
  • DOI: 10.1038/nmat3861

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


Theory of spin Hall magnetoresistance
journal, April 2013


Topological Hall Effect in the A Phase of MnSi
journal, May 2009


Near room-temperature formation of a skyrmion crystal in thin-films of the helimagnet FeGe
journal, December 2010

  • Yu, X. Z.; Kanazawa, N.; Onose, Y.
  • Nature Materials, Vol. 10, Issue 2
  • DOI: 10.1038/nmat2916

Magnetic proximity effect in Pt / CoFe 2 O 4 bilayers
journal, January 2018


Epitaxial films of Heusler compound Co 2 FeAl 0.5 Si 0.5 with high crystalline quality grown by off-axis sputtering
journal, October 2013

  • Peters, B.; Alfonsov, A.; Blum, C. G. F.
  • Applied Physics Letters, Vol. 103, Issue 16
  • DOI: 10.1063/1.4825338

Topological properties and dynamics of magnetic skyrmions
journal, December 2013


Topological Hall effect at above room temperature in heterostructures composed of a magnetic insulator and a heavy metal
journal, May 2019


Resistive detection of the Néel temperature of Cr 2 O 3 thin films
journal, January 2019

  • Iino, Tatsuya; Moriyama, Takahiro; Iwaki, Hiroyuki
  • Applied Physics Letters, Vol. 114, Issue 2
  • DOI: 10.1063/1.5082220

High-Field Antiferromagnetic Resonance in Cr 2 O 3
journal, April 1963


Blowing magnetic skyrmion bubbles
journal, June 2015


Identification of ground-state spin ordering in antiferromagnetic transition metal oxides using the Ising model and a genetic algorithm
journal, January 2017


Theory of the Topological Spin Hall Effect in Antiferromagnetic Skyrmions: Impact on Current-Induced Motion
journal, August 2018


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