Large Rashba parameter for 4d strongly correlated perovskite oxide SrNbO3 ultrathin films

Hikaru Okuma; Yumiko Katayama; Kazunori Ueno

doi:10.1103/PhysRevMaterials.8.015001

Large Rashba parameter for 4d strongly correlated perovskite oxide SrNbO3 ultrathin films

Strongly Correlated Electrons 2024-03-20 v1

Authors: Hikaru Okuma , Yumiko Katayama , Kazunori Ueno

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Abstract

To elucidate the spin relaxation mechanism of SrNbO3 (SNO) ultrathin films, the transport properties of a series of SNO films with various thicknesses were measured on both sides of the metal insulator transition. The spin orbit scattering time was deduced from the analysis of the magnetoresistance with weak antilocalization theory, and it was found that the spin orbit scattering time was inversely proportional to the momentum scattering time. This result was explained in terms of the D`Yakonov Perel` mechanism, indicative of the dominant Rashba effect. The values of the Rashba parameter were largest in the values reported for other ultrathin films of metallic oxides.

Keywords

srnbO3 ultrathin films rashba parameter spin relaxation weak antilocalization dyakonov-perel mechanism metal insulator transition spin orbit scattering

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@article{arxiv.2209.09730,
  title  = {Large Rashba parameter for 4d strongly correlated perovskite oxide SrNbO3 ultrathin films},
  author = {Hikaru Okuma and Yumiko Katayama and Kazunori Ueno},
  journal= {arXiv preprint arXiv:2209.09730},
  year   = {2024}
}

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15pages, 7 figures

Large Rashba parameter for 4d strongly correlated perovskite oxide SrNbO3 ultrathin films

Abstract

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