Berry phase manipulation in ultrathin SrRuO3 films

Non-uniform magnetization profile in ferromagnetic heterostructures leading to topological Hall effect like signatures

“…To summarize, motivated by several recent experimental papers on SrRuO 3 based heterostructures that claim that additional features in AHE that are often attributed to THE may not necessarily be a result of non trivial spin textures and may arise from an inhomogeneity in the ferromagnetic structure [40][41][42][43][44], we have developed a simple model to investigate changes in ferromagnetic hysteresis loop due to interfacial effects. Within the formalism of a phenomenological approach, developed by Jiles et al [49], we have considered that the strength of the interdomain magnetic coupling parameter within the ferromagnetic material as a function of the distance from the interface.…”

“…Bulk SrRuO 3 (SRO) is a metallic ferromagnet with a magnetic transition temperature of 165 K [35]. The origin of THE-like signal in SRO-based heterostructures is under intense scrutiny in recent years [25,[36][37][38][39][40][41][42][43][44][45]. While the origin of this phenomenon has been linked with the stabilization of nontrivial spin textures like skyrmions near the interface [25,[36][37][38][39], another set of studies have emphasized that the sample inhomogeneity gives rise to THE-like features [40][41][42][43][44].…”

“…The origin of THE-like signal in SRO-based heterostructures is under intense scrutiny in recent years [25,[36][37][38][39][40][41][42][43][44][45]. While the origin of this phenomenon has been linked with the stabilization of nontrivial spin textures like skyrmions near the interface [25,[36][37][38][39], another set of studies have emphasized that the sample inhomogeneity gives rise to THE-like features [40][41][42][43][44]. Since the shape of ferromagnetic hysteresis loop is generally affected due to the electronic, magnetic and structural changes across the interface [46,47], we have considered another possible scenario with a non-uniform magnetization profile along the growth direction of the heterostructure [48].…”

Non-uniform magnetization profile in ferromagnetic heterostructures leading to topological Hall effect like signatures

“…Bulk SrRuO 3 (SRO) is a metallic ferromagnet with a magnetic transition temperature of 165 K 35 . The origin of THE-like signal in SRO-based heterostructures is under intense scrutiny in recent years 25,[36][37][38][39][40][41][42][43][44][45] . While the origin of this phenomenon has been linked with the stabilization of nontrivial spin textures like skyrmions near the interface 25,[36][37][38][39] , another set of studies have emphasized that the sample inhomogeneity gives rise to THE-like features [40][41][42][43][44] .…”

“…The origin of THE-like signal in SRO-based heterostructures is under intense scrutiny in recent years 25,[36][37][38][39][40][41][42][43][44][45] . While the origin of this phenomenon has been linked with the stabilization of nontrivial spin textures like skyrmions near the interface 25,[36][37][38][39] , another set of studies have emphasized that the sample inhomogeneity gives rise to THE-like features [40][41][42][43][44] . Since the shape of ferromagnetic hysteresis loop is generally affected due to the electronic, magnetic and structural changes across the interface 46,47 , we have considered another possible scenario with a nonuniform magnetization profile along the growth direction of the heterostructure 48 .…”