Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films

P. Wadley; K. W. Edmonds; M. R. Shahedkhah; R. P. Campion; B. L. Gallagher; J. Zelezny; J. Kunes; V. Novak; T. Jungwirth; V. Saidl; P. Nemec; F. Maccherozzi; S. S. Dhesi

Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films

Mesoscale and Nanoscale Physics 2017-02-13 v1

Authors: P. Wadley , K. W. Edmonds , M. R. Shahedkhah , R. P. Campion , B. L. Gallagher , J. Zelezny , J. Kunes , V. Novak , T. Jungwirth , V. Saidl , P. Nemec , F. Maccherozzi , S. S. Dhesi

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Abstract

Using x-ray magnetic circular and linear dichroism techniques, we demonstrate a collinear exchange coupling between an epitaxial antiferromagnet, tetragonal CuMnAs, and an Fe surface layer. A small uncompensated Mn magnetic moment is observed which is antiparallel to the Fe magnetization. The staggered magnetization of the 5nm thick CuMnAs layer is rotatable under small magnetic fields, due to the interlayer exchange coupling. This allows us to obtain the x-ray magnetic linear dichroism spectra for different crystalline orientations of CuMnAs in the (001) plane.

Keywords

antiferromagnetic films exchange coupling CuMnAs Fe layer spin axis orientation x-ray magnetic dichroism staggered magnetization

Cite

@article{arxiv.1702.03147,
  title  = {Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films},
  author = {P. Wadley and K. W. Edmonds and M. R. Shahedkhah and R. P. Campion and B. L. Gallagher and J. Zelezny and J. Kunes and V. Novak and T. Jungwirth and V. Saidl and P. Nemec and F. Maccherozzi and S. S. Dhesi},
  journal= {arXiv preprint arXiv:1702.03147},
  year   = {2017}
}

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10 pages, 3 figures

Control of antiferromagnetic spin axis orientation in bilayer Fe/CuMnAs films

Abstract

Keywords

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