Colossal topological Hall effect at the transition between isolated and lattice-phase interfacial skyrmions
| Autor: | A. Yagil, I. V. Rozhansky, Christos Panagopoulos, Börge Göbel, Ophir M. Auslaender, Ingrid Mertig, M. Raju, Nghiep Khoan Duong, Ersoy Şaşıoğlu, Alexander Paul Petrović, K. S. Denisov |
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| Rok vydání: | 2021 |
| Předmět: |
Phase boundary
Materials science Orders of magnitude (temperature) Science General Physics and Astronomy FOS: Physical sciences 02 engineering and technology Topology 01 natural sciences General Biochemistry Genetics and Molecular Biology Condensed Matter - Strongly Correlated Electrons Hall effect Electrical resistivity and conductivity Phase (matter) Lattice (order) 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 010306 general physics Spin-½ Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics Strongly Correlated Electrons (cond-mat.str-el) Skyrmion High Energy Physics::Phenomenology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 0210 nano-technology |
| Zdroj: | Nature Communications Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021) |
| Popis: | The topological Hall effect is used extensively to study chiral spin textures in various materials. However, the factors controlling its magnitude in technologically-relevant thin films remain uncertain. Using variable temperature magnetotransport and real-space magnetic imaging in a series of Ir/Fe/Co/Pt heterostructures, here we report that the chiral spin fluctuations at the phase boundary between isolated skyrmions and a disordered skyrmion lattice result in a power-law enhancement of the topological Hall resistivity by up to three orders of magnitude. Our work reveals the dominant role of skyrmion stability and configuration in determining the magnitude of the topological Hall effect. Comment: 10 pages, 3 figures |
| Databáze: | OpenAIRE |
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