Journal
NATURE PHYSICS
Volume 13, Issue 2, Pages 162-169Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS3883
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Funding
- US Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division
- DOE, Office of Science, Basic Energy Sciences [DE-AC02-06CH11357]
- 1000-Youth Talent Program of China
- National Key Research Plan of China [2016YFA0302300]
- NSF Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems (TANMS)
- National Natural Science Foundation of China [1157040329]
- Shenzhen Fundamental Research Fund [JCYJ20160331164412545]
- JSPS RONPAKU Program
- NSF CAREER [1053854]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1053854] Funding Source: National Science Foundation
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The well-known Hall effect describes the transverse deflection of charged particles (electrons/holes) as a result of the Lorentz force. Similarly, it is intriguing to examine if quasi-particles without an electric charge, but with a topological charge, show related transverse motion. Magnetic skyrmions with a well-defined spin texture with a unit topological charge serve as good candidates to test this hypothesis. In spite of the recent progress made on investigating magnetic skyrmions, direct observation of the skyrmion Hall effect has remained elusive. Here, by using a current-induced spin Hall spin torque, we experimentally demonstrate the skyrmion Hall effect, and the resultant skyrmion accumulation, by driving skyrmions from the creep-motion regime (where their dynamics are influenced by pinning defects) into the steady-flow-motion regime. The experimental observation of transverse transport of skyrmions due to topological charge may potentially create many exciting opportunities, such as topological selection.
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