Strain Dependent Spin Hall Magnetoresistance in the Multiferroic Antiferromagnet BiFeO$_3$

D. Sando; S. Chen; O. Paull; B. Xu; J. J. L. van Rijn; C. Xu; S. Xu; F. Appert; J. Juraszek; L. Bellaiche; V. Nagarajan; T. Banerjee

Strain Dependent Spin Hall Magnetoresistance in the Multiferroic Antiferromagnet BiFeO$_3$

Materials Science 2023-08-25 v1 Mesoscale and Nanoscale Physics

Authors: D. Sando , S. Chen , O. Paull , B. Xu , J. J. L. van Rijn , C. Xu , S. Xu , F. Appert , J. Juraszek , L. Bellaiche , V. Nagarajan , T. Banerjee

View on arXiv ↗ PDF ↗

Abstract

The spin Hall magnetoresistance (SMR) of epitaxial BiFeO $_3$ thin films is investigated. SMR consistent with ferromagnetic interfacial states for BiFeO $_3$ films fabricated on (001) SrTiO $_3$ (R' BFO) and LaAlO $_3$ (T' BFO) substrates is found, albeit with different temperature dependencies. For T' BFO, the SMR is enhanced at room temperature, and decays with reduced temperatures. By contrast, R' BFO shows a monotonic decrease in SMR response with increasing temperature, mirroring the trend of a weak ferromagnet. Density functional theory shows that this difference originates from the coupling of the applied magnetic field to oxygen octahedral rotation (R') and spin (T') degrees of freedom.

Keywords

spin hall magnetoresistance BiFeO3 multiferroic antiferromagnet strain dependence density functional theory oxygen octahedral rotation

Cite

@article{arxiv.2308.12500,
  title  = {Strain Dependent Spin Hall Magnetoresistance in the Multiferroic Antiferromagnet BiFeO$_3$},
  author = {D. Sando and S. Chen and O. Paull and B. Xu and J. J. L. van Rijn and C. Xu and S. Xu and F. Appert and J. Juraszek and L. Bellaiche and V. Nagarajan and T. Banerjee},
  journal= {arXiv preprint arXiv:2308.12500},
  year   = {2023}
}

Comments

14 pages incl. 3 figures

Strain Dependent Spin Hall Magnetoresistance in the Multiferroic Antiferromagnet BiFeO$_3$

Abstract

Keywords

Cite

Comments

Related papers