Following enhanced Sm spin projection in Gd$_x$Sm$_{1-x}$N

J. D. Miller; J. F. McNulty; B. J. Ruck; M. Al Khalfioui; S. Vézian; M. Suzuki; H. Osawa; N. Kawamura; H. J. Trodahl

doi:10.1103/PhysRevB.106.174432

Following enhanced Sm spin projection in Gd$_x$Sm$_{1-x}$N

Materials Science 2022-11-28 v1

Authors: J. D. Miller , J. F. McNulty , B. J. Ruck , M. Al Khalfioui , S. Vézian , M. Suzuki , H. Osawa , N. Kawamura , H. J. Trodahl

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Abstract

The rare-earth nitrides form a series of structurally simple $intrinsic$ ferromagnetic semiconductors, a rare class of both fundamental interest and application potential. Within the series there is a wide range of magnetic properties relating to the spin/orbit contributions to the ferromagnetic ground states. We report an x-ray magnetic circular dichroism investigation of the spin/orbit magnetic dipole alignments of Sm and Gd ions in epitaxial Gd $_x$ Sm $_{1-x}$ N films. The Sm spin-alignment expectation value $\langle S_{z} \rangle$ is seen to be strengthened by the Gd/Sm exchange interaction, providing guidance concerning the composition for an angular momentum compensation point (where the volume-averaged total angular momentum of a film is zero).

Keywords

rare-earth nitrides ferromagnetic semiconductors gd_sm_n x-ray magnetic circular dichroism spin projection exchange interaction angular momentum compensation

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@article{arxiv.2208.10670,
  title  = {Following enhanced Sm spin projection in Gd$_x$Sm$_{1-x}$N},
  author = {J. D. Miller and J. F. McNulty and B. J. Ruck and M. Al Khalfioui and S. Vézian and M. Suzuki and H. Osawa and N. Kawamura and H. J. Trodahl},
  journal= {arXiv preprint arXiv:2208.10670},
  year   = {2022}
}

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7 Pages, 7 Figures. Submitted to Phys. Rev. B

Following enhanced Sm spin projection in Gd$_x$Sm$_{1-x}$N

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