期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-05166-9
关键词
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资金
- Army Research Office [W911NF-16-1-0472, W911NF-15-1-0561:P00001]
- National Key R&D Program of China [2018YFA0305601]
- National Science Foundation [1611570, DMR-1411085, ACI-1053575]
- Spins and Heat in Nanoscale Electronic Systems (SHINES), an Energy Frontier Research Center - US Department of Energy (DOE), Office of Science, Basic Energy Sciences [S000686:03]
- NSF, at the Pittsburgh Supercomputing Center (PSC) [ACI-1445606]
- DOE Office of Science User Facility [DE-AC02-05CH11231]
- National Thousand-Young-Talents Program
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)(2)Te-3 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 anti-ferromagnetic order.
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