Large Spin Hall Magnetoresistance in Antiferromagnetic α−Fe2O3/Pt Heterostructures

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dc.contributor.authorFischer, Johanna
dc.contributor.authorAlthammer, Matthias
dc.contributor.authorVlietstra, Nynke
dc.contributor.authorHuebl, Hans
dc.contributor.authorGoennenwein, Sebastian T. B.
dc.contributor.authorGross, Rudolf
dc.contributor.authorGeprägs, Stephan
dc.contributor.authorOpel, Matthias
dc.date.accessioned2020-11-17T14:02:27Z
dc.date.available2020-11-17T14:02:27Z
dc.date.issued2020eng
dc.description.abstractWe investigate the spin Hall magnetoresistance (SMR) at room temperature in thin film heterostructures of antiferromagnetic, insulating, (0001)-oriented alpha-Fe2O3 (hematite) and Pt. We measure their longitudinal and transverse resistivities while rotating an applied magnetic field of up to 17T in three orthogonal planes. For out-of-plane magnetotransport measurements, we find indications for a multidomain antiferromagnetic configuration whenever the field is aligned along the film normal. For in-plane field rotations, we clearly observe a sinusoidal resistivity oscillation characteristic for the SMR due to a coherent rotation of the Neel vector. The maximum SMR amplitude of 0.25% is, surprisingly, twice as high as for prototypical ferrimagnetic Y3Fe5O12/Pt heterostructures. The SMR effect saturates at much smaller magnetic fields than in comparable antiferromagnets, making the alpha-Fe2O3/Pt system particularly interesting for room-temperature antiferromagnetic spintronic applications.eng
dc.description.versionpublishedeng
dc.identifier.arxiv1907.13393v4eng
dc.identifier.doi10.1103/PhysRevApplied.13.014019eng
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/51840
dc.language.isoengeng
dc.rightsterms-of-use
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dc.subject.ddc530eng
dc.titleLarge Spin Hall Magnetoresistance in Antiferromagnetic α−Fe<sub>2</sub>O<sub>3</sub>/Pt Heterostructureseng
dc.typeJOURNAL_ARTICLEeng
dspace.entity.typePublication
kops.citation.bibtex
@article{Fischer2020Large-51840,
  year={2020},
  doi={10.1103/PhysRevApplied.13.014019},
  title={Large Spin Hall Magnetoresistance in Antiferromagnetic α−Fe<sub>2</sub>O<sub>3</sub>/Pt Heterostructures},
  number={1},
  volume={13},
  journal={Physical Review Applied},
  author={Fischer, Johanna and Althammer, Matthias and Vlietstra, Nynke and Huebl, Hans and Goennenwein, Sebastian T. B. and Gross, Rudolf and Geprägs, Stephan and Opel, Matthias},
  note={Article Number: 014019}
}
kops.citation.iso690FISCHER, Johanna, Matthias ALTHAMMER, Nynke VLIETSTRA, Hans HUEBL, Sebastian T. B. GOENNENWEIN, Rudolf GROSS, Stephan GEPRÄGS, Matthias OPEL, 2020. Large Spin Hall Magnetoresistance in Antiferromagnetic α−Fe2O3/Pt Heterostructures. In: Physical Review Applied. American Physical Society (APS). 2020, 13(1), 014019. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.13.014019deu
kops.citation.iso690FISCHER, Johanna, Matthias ALTHAMMER, Nynke VLIETSTRA, Hans HUEBL, Sebastian T. B. GOENNENWEIN, Rudolf GROSS, Stephan GEPRÄGS, Matthias OPEL, 2020. Large Spin Hall Magnetoresistance in Antiferromagnetic α−Fe2O3/Pt Heterostructures. In: Physical Review Applied. American Physical Society (APS). 2020, 13(1), 014019. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.13.014019eng
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kops.sourcefieldPhysical Review Applied. American Physical Society (APS). 2020, <b>13</b>(1), 014019. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.13.014019deu
kops.sourcefield.plainPhysical Review Applied. American Physical Society (APS). 2020, 13(1), 014019. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.13.014019deu
kops.sourcefield.plainPhysical Review Applied. American Physical Society (APS). 2020, 13(1), 014019. eISSN 2331-7019. Available under: doi: 10.1103/PhysRevApplied.13.014019eng
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source.identifier.eissn2331-7019eng
source.periodicalTitlePhysical Review Appliedeng
source.publisherAmerican Physical Society (APS)eng

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