TY - JOUR
T1 - Direct observation of the skyrmion Hall effect
AU - Jiang, Wanjun
AU - Zhang, Xichao
AU - Yu, Guoqiang
AU - Zhang, Wei
AU - Wang, Xiao
AU - Benjamin Jungfleisch, M.
AU - Pearson, John E.
AU - Cheng, Xuemei
AU - Heinonen, Olle
AU - Wang, Kang L.
AU - Zhou, Yan
AU - Hoffmann, Axel
AU - Te Velthuis, Suzanne G.E.
N1 - Funding Information:
Work carried out at the Argonne National Laboratory including lithographic processing and MOKE imaging was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering Division. Lithography was carried out at the Center for Nanoscale Materials, which is supported by the DOE, Office of Science, Basic Energy Sciences under Contract No. DE-AC02-06CH11357. W.J. was partially supported by the 1000-Youth Talent Program of China, and National Key Research Plan of China under contract number 2016YFA0302300. Thin film growth performed at UCLA was partially supported by the NSF Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems (TANMS). Y.Z. acknowledges support by the National Natural Science Foundation of China (Project No. 1157040329), Shenzhen Fundamental Research Fund under Grant No. JCYJ20160331164412545. X.Z. was supported by JSPS RONPAKU (Dissertation Ph.D.) Program.Work at Bryn Mawr College is supported by NSF CAREER award (No. 1053854). The authors wish to thank C. Reichhardt for insightful discussions.
Publisher Copyright:
© 2017 Macmillan Publishers Limited.
PY - 2017/2/1
Y1 - 2017/2/1
N2 - 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.
AB - 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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U2 - 10.1038/nphys3883
DO - 10.1038/nphys3883
M3 - Article
AN - SCOPUS:84988422181
SN - 1745-2473
VL - 13
SP - 162
EP - 169
JO - Nature Physics
JF - Nature Physics
IS - 2
ER -