Journal
JOURNAL OF APPLIED PHYSICS
Volume 127, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0009566
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Funding
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [TRR 173-268565370]
- European Commission FET Open RIA ASPIN [766566]
- Max Planck Graduate Center
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The recently discovered phenomenon of Neel spin-orbit torque in antiferromagnetic Mn2Au [Bodnar et al., Nat. Commun. 9, 348 (2018); Meinert et al., Phys. Rev. Appl. 9, 064040 (2018); Bodnar et al., Phys. Rev. B 99, 140409(R) (2019)] has generated huge interest in this material for spintronics applications. In this paper, we report the preparation and characterization of high quality Mn2Au thin films by molecular beam epitaxy and compare them with magnetron sputtered samples. The films were characterized for their structural and morphological properties using reflective high-energy electron diffraction, x-ray diffraction, x-ray reflectometry, atomic force microscopy, and temperature dependent resistance measurements. The thin film composition was determined using both inductively coupled plasma optical emission spectroscopy and Rutherford backscattering spectrometry techniques. The MBE-grown films were found to show a superior smooth morphology and a low defect concentration, resulting in reduced scattering of the charge carriers.
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