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Two-channel anomalous Hall effect in SrRuO3

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Title
Two-channel anomalous Hall effect in SrRuO3
Author(s)
Graham Kimbell; Paul M. Sass; Bart Woltjes; Eun Kyo Ko; Tae Won Noh; Weida Wu; Jason W. A. Robinson
Subject
FILMS, ; GROWTH
Publication Date
2020-05
Journal
PHYSICAL REVIEW MATERIALS, v.4, no.5, pp.054414
Publisher
AMER PHYSICAL SOC
Abstract
©2020 American Physical Society. The Hall effect in SrRuO3 thin films near the thickness limit for ferromagnetism shows an extra peak in addition to the ordinary and anomalous Hall effects. This extra peak has been attributed to a topological Hall effect due to two-dimensional skyrmions in the film around the coercive field; however, the sign of the anomalous Hall effect in SrRuO3 can change as a function of saturation magnetization. Here we report Hall peaks in SrRuO3 in which volumetric magnetometry measurements and magnetic force microscopy indicate that the peaks result from the superposition of two anomalous Hall channels with opposite sign. These channels likely form due to thickness variations in SrRuO3, creating two spatially separated magnetic regions with different saturation magnetizations and coercive fields. The results are central to the development of strongly correlated materials for spintronics
URI
https://pr.ibs.re.kr/handle/8788114/7856
DOI
10.1103/PhysRevMaterials.4.054414
ISSN
2475-9953
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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