Spin orbit effects in CoFeB/MgO hetereostructures with heavy metal underlayers

Jacob Torrejon; Junyeon Kim; Jaivardhan Sinha; Masamitsu Hayashi

doi:10.1142/S2010324716400026

Spin orbit effects in CoFeB/MgO hetereostructures with heavy metal underlayers

Mesoscale and Nanoscale Physics 2016-10-25 v1 Materials Science

Authors: Jacob Torrejon , Junyeon Kim , Jaivardhan Sinha , Masamitsu Hayashi

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Abstract

We study effects originating from the strong spin orbit coupling in CoFeB/MgO heterostructures with heavy metal (HM) underlayers. The perpendicular magnetic anisotropy at the CoFeB/MgO interface, the spin Hall angle of the heavy metal layer, current induced torques and the Dzyaloshinskii-Moriya interaction at the HM/CoFeB interfaces are studied for films in which the early 5d transition metals are used as the HM underlayer. We show how the choice of the HM layer influences these intricate spin orbit effects that emerge within the bulk and at interfaces of the heterostructures.

Keywords

spin orbit coupling CoFeB/MgO heterostructures perpendicular magnetic anisotropy spin Hall angle Dzyaloshinskii-Moriya interaction heavy metal underlayer

Cite

@article{arxiv.1610.07473,
  title  = {Spin orbit effects in CoFeB/MgO hetereostructures with heavy metal underlayers},
  author = {Jacob Torrejon and Junyeon Kim and Jaivardhan Sinha and Masamitsu Hayashi},
  journal= {arXiv preprint arXiv:1610.07473},
  year   = {2016}
}

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