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arXiv · 2301.10148

Ru$_{2-x}$Mn$_{1+x}$Al thin films

K. E. Siewierska·H. Kurt·B. Shortall·A. Jha·N. Teichert·G. Atcheson·M. Venkatesan·J. M. D. Coey·Z. Gercsi·K. Rode
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Abstract

The cubic Heusler alloy Ru$_{2-x}$Mn$_{1+x}$Al is grown in thin film form on MgO and MgAl$_2$O$_4$ substrates. It is a highly spin-polarised ferrimagnetic metal, with weak magnetocrystalline anisotropy. Although structurally and chemically similar to $\text{Mn}_2\text{Ru}_x\text{Ga}$, it does not exhibit ferrimagnetic compensation, or large magneto galvanic effects. The differences are attributed to a combination of atomic order and the hybridisation with the group 13 element Al or Ga. The spin polarisation is around 50 to 60 %. There is a gap in the density of states just above the Fermi level in fully ordered compounds.

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K. E. Siewierska, H. Kurt, B. Shortall, A. Jha, N. Teichert, G. Atcheson, M. Venkatesan, J. M. D. Coey, Z. Gercsi, K. Rode. 2023-01-24. Ru$_{2-x}$Mn$_{1+x}$Al thin films. https://arxiv.org/abs/2301.10148

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