TY  - JOUR
AU  - Pütter, Sabine
TI  - Impact of the interface quality of Pt/YIG(111) hybrids on their spin Hall magnetoresistance
JO  - Applied physics letters
VL  - 110
IS  - 1
SN  - 1077-3118
CY  - Melville, NY
PB  - American Inst. of Physics
M1  - FZJ-2017-00250
SP  - 012403 -
PY  - 2017
AB  - 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 diffrac- tion 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 magnetoresis- tance, 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 atmo- sphere. 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 agglomera- tion at the Y3Fe5O12 surface.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000392834600028
DO  - DOI:10.1063/1.4973460
UR  - https://juser.fz-juelich.de/record/825978
ER  -