2016/12/24 by Sabine Pütter, Stephan Geprägs, Richard Schlitz +6 · 44 citations
Chemistry · Engineering · Physics and Astronomy · #Analytical Chemistry (journal) #Annealing (glass) #Auger electron spectroscopy #Chemistry #Condensed matter physics #Diffraction #Electron diffraction #Hall effect #Low-energy electron diffraction #Magnetic field #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Magnetoresistance #Materials science #Metallurgy #Optics #Physics #Physics of Superconductivity and Magnetism #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.4973460
published in Applied Physics Letters 110(1) (American Institute of Physics)
arxiv created 2016/12/24 · arxiv updated 2016/12/28 · openalex publication_date 2017/01/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the influence of the interface quality of Pt/Y3Fe5O12(111) hybrids on their spin Hall magnetoresistance. This is achieved by exposing Y3Fe5O12(111) single crystal substrates to different well-defined surface treatments prior to the Pt deposition. The quality of the Y3Fe5O12(YIG) surface, the Pt/YIG interface and the Pt layer is monitored in-situ by reflection high-energy electron diffraction and Auger electron spectroscopy as well as ex-situ by atomic force microscopy and X-ray diffraction. To identify the impact of the different surface treatments on the spin Hall magnetoresistance, angle-dependent magnetoresistance measurements are carried out at room temperature. The largest spin Hall magnetoresistance is found in Pt/YIG fabricated by a two-step surface treatment consisting of a “piranha” etch process followed by an annealing step at 500 °C in pure oxygen atmosphere. Our data suggest that the small spin Hall magnetoresistance in Pt/YIG without any surface treatments of the YIG substrate prior to Pt deposition is caused by a considerable carbon agglomeration at the Y3Fe5O12 surface.