Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects

Miren Isasa; Amilcar Bedoya-Pinto; Saül Vélez; Federico Golmar; Florencio Sánchez; Luis E. Hueso; Josep Fontcuberta; Fèlix Casanova

doi:10.1063/1.4897544

Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects

Mesoscale and Nanoscale Physics 2014-10-10 v3

Authors: Miren Isasa , Amilcar Bedoya-Pinto , Saül Vélez , Federico Golmar , Florencio Sánchez , Luis E. Hueso , Josep Fontcuberta , Fèlix Casanova

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Abstract

We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR). The magnitude of the SMR depends on the interface preparation conditions, being optimal when Pt/CFO samples are prepared in situ, in a single process. The spin-mixing interface conductance, the key parameter governing SMR and other relevant spin-dependent phenomena such as spin pumping or spin Seebeck effect, is found to be different depending on the crystallographic orientation of CFO, highlighting the role of the composition and density of magnetic ions at the interface on spin mixing.

Keywords

magnetoresistance spin transport spin hall effect

Cite

@article{arxiv.1307.1267,
  title  = {Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects},
  author = {Miren Isasa and Amilcar Bedoya-Pinto and Saül Vélez and Federico Golmar and Florencio Sánchez and Luis E. Hueso and Josep Fontcuberta and Fèlix Casanova},
  journal= {arXiv preprint arXiv:1307.1267},
  year   = {2014}
}

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13 pages, 5 figures

Spin Hall magnetoresistance at Pt/CoFe2O4 interfaces and texture effects

Abstract

Keywords

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