Effect of surface roughness on the anomalous Hall effect in Fe thin films
KAUST DepartmentImaging and Characterization Core Lab
Nanofabrication Core Lab
Thin Films & Characterization
Physical Science and Engineering (PSE) Division
Material Science and Engineering Program
Permanent link to this recordhttp://hdl.handle.net/10754/662971
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AbstractSurface roughness plays an important role on the magnetotransport properties of thin films, especially in ultrathin films. In this work, we prepared Fe thin films with various surface roughness by using different seed layers and studied the electrical transport and anomalous Hall effect. By tuning surface roughness scattering, the longitudinal resistivity (ρxx) measured at 5 K increases by one order of magnitude and the corresponding anomalous Hall resistivity (ρAHE) increases by three times with increasing roughness. The intrinsic, skew-scattering, and side-jump contributions to ρAHE were separated from our data. The anomalous Hall angle depends on the surface roughness, which may be of importance to the material engineering for achieving large spin Hall angle.
SponsorsThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) under Award No. CRF-2017-3427-CRG6. Q.Z. acknowledges the financial support by KAUST sensor project (REP/1/2708-01).
PublisherAmerican Physical Societyrevtex@aps.org
JournalPhysical Review B