2020/03/11 by I Gede Arjana, Arjana, I Gede, Imara Lima Fernandes +5 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #FOS: Physical sciences #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Molecular Junctions and Nanostructures
paper · pdf · doi:10.48550/arxiv.2003.05518
openalex publication_date 2020/03/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Magnetic skyrmions are prime candidates as information carriers for\nspintronic devices due to their topological nature and nanometric size.\nHowever, unavoidable inhomogeneities inherent to any material leads to pinning\nor repulsion of skyrmions that, in analogy to biology concepts, define the\nphenotype of the skyrmion-defect interaction, generating complexity in their\nmotion and challenging their application as future bits of information. Here,\nwe demonstrate that atom-by-atom manufacturing of multi-atomic defects, being\nantiferromagnetic or ferromagnetic, permits the breeding of their energy\nprofiles, for which we build schematically a Punnet-square. As established from\nfirst-principles for skyrmions generated in PdFe bilayer on Ir(111) surface,\nthe resulting interaction phenotype is rich. It can be opposite to the original\none and eventually be of dual pinning-repulsive nature yielding energy\nlandscapes hosting multi-domains. This is dictated by the stacking site,\ngeometry, size and chemical nature of the adsorbed defects, which control the\ninvolved magnetic interactions. This work provides new insights towards the\ndevelopment of disruptive device architectures incorporating defects into their\ndesign aiming to control and guide skyrmions.\n