Journal
NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-019-10815-8
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Funding
- National Science Foundation of China [51861135104, 11574097]
- National Key Research and Development Program of China [2016YFA0401704]
- Fundamental Research Funds for the Central Universities [2019kfyXMBZ071]
- Agence Nationale de la Recherche [ANR-18-CE92-0020-01]
- 1000 Youth Talents Plan
- China High-end foreign expert program
- Fonds-ESPCI-Paris
- US National Science Foundation Materials Theory program [DMR-1818533]
- China Scholarship Council (CSC)
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Magnetic domain walls are topological solitons whose internal structure is set by competing energies which sculpt them. In common ferromagnets, domain walls are known to be of either Bloch or Neel types. Little is established in the case of Mn3Sn, a triangular antiferro-magnet with a large room-temperature anomalous Hall effect, where domain nucleation is triggered by a well-defined threshold magnetic field. Here, we show that the domain walls of this system generate an additional contribution to the Hall conductivity tensor and a transverse magnetization. The former is an electric field lying in the same plane with the magnetic field and electric current and therefore a planar Hall effect. We demonstrate that in-plane rotation of spins inside the domain wall would explain both observations and the clockwise or anticlockwise chirality of the walls depends on the history of the field orientation and can be controlled.
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