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Exchange-biasing topological charges by antiferromagnetism
- Source :
- He, QL; Yin, G; Grutter, AJ; Pan, L; Che, X; Yu, G; et al.(2018). Exchange-biasing topological charges by antiferromagnetism. Nature Communications, 9(1). doi: 10.1038/s41467-018-05166-9. UCLA: Retrieved from: http://www.escholarship.org/uc/item/0x23q03s, Nature communications, vol 9, iss 1, Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018), Nature Communications
- Publication Year :
- 2018
- Publisher :
- eScholarship, University of California, 2018.
-
Abstract
- Geometric Hall effect is induced by the emergent gauge field experienced by the carriers adiabatically passing through certain real-space topological spin textures, which is a probe to non-trivial spin textures, such as magnetic skyrmions. We report experimental indications of spin-texture topological charges induced in heterostructures of a topological insulator (Bi,Sb)2Te3 coupled to an antiferromagnet MnTe. Through a seeding effect, the pinned spins at the interface leads to a tunable modification of the averaged real-space topological charge. This effect experimentally manifests as a modification of the field-dependent geometric Hall effect when the system is field-cooled along different directions. This heterostructure represents a platform for manipulating magnetic topological transitions using antiferromagnetic order.<br />Spin-polarized carriers could show an extra Hall component when moving through certain real-space topological spin textures. Here, He et al. report an exchange bias experienced by the topological spin textures living at the interface between a topological insulator and an adjacent antiferromagnet, suggesting a chiral spin texture is induced.
- Subjects :
- Magnetism
Science
General Physics and Astronomy
02 engineering and technology
Topology
01 natural sciences
Article
General Biochemistry, Genetics and Molecular Biology
Hall effect
0103 physical sciences
Antiferromagnetism
010306 general physics
lcsh:Science
Topological quantum number
Spin-½
Physics
Multidisciplinary
Spins
Skyrmion
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Computer Science::Graphics
Topological insulator
Computer Science::Computer Vision and Pattern Recognition
lcsh:Q
Condensed Matter::Strongly Correlated Electrons
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- He, QL; Yin, G; Grutter, AJ; Pan, L; Che, X; Yu, G; et al.(2018). Exchange-biasing topological charges by antiferromagnetism. Nature Communications, 9(1). doi: 10.1038/s41467-018-05166-9. UCLA: Retrieved from: http://www.escholarship.org/uc/item/0x23q03s, Nature communications, vol 9, iss 1, Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018), Nature Communications
- Accession number :
- edsair.doi.dedup.....936ff96f2bc835eb69372a75002ae11f