TY - JOUR
T1 - Superposition of Emergent Monopole and Antimonopole in CoTb Thin Films
AU - Guang, Yao
AU - Ran, Kejing
AU - Zhang, Junwei
AU - Liu, Yizhou
AU - Zhang, Senfu
AU - Qiu, Xuepeng
AU - Peng, Yong
AU - Zhang, Xixiang
AU - Weigand, Markus
AU - Gräfe, Joachim
AU - Schütz, Gisela
AU - van der Laan, Gerrit
AU - Hesjedal, Thorsten
AU - Zhang, Shilei
AU - Yu, Guoqiang
AU - Han, Xiufeng
N1 - KAUST Repository Item: Exported on 2021-11-25
Acknowledged KAUST grant number(s): ORS2019-CRG8-4081
Acknowledgements: This work was supported by the National Key Research and Development Program of China (Grants No. 2017YFA0206200 and No. 2020YFA0309400), the Beijing Natural Science Foundation (Grant No. Z190009), the Science Center of the National Science Foundation
of China (Grant No. 52088101), the National Natural Science Foundation of China (Grants No. 11874409, No. 51831012, No. 12074257, No. 11804380, and No. 12004249), the Shanghai Sailing Program (Grant No. 20YF1430600), and the K. C. Wong Education Foundation (Grant No. GJTD- 2019-14). X. X. Z acknowledges the support from King Abdullah University of Science and Technology with funding numbers: ORS2019-CRG8-4081. T. H. acknowledges support from the Engineering and Physical Science Research Council (UK) under Grant No. EP/N032128/1. Diamond Light Source is acknowledged for beam time on I10 under proposal number MM-23785.
PY - 2021/11/16
Y1 - 2021/11/16
N2 - A three-dimensional singular point that consists of two oppositely aligned emergent monopoles is identified in continuous CoTb thin films, as confirmed by complementary techniques of resonant elastic x-ray scattering, Lorentz transmission electron microscopy, and scanning transmission x-ray microscopy. This new type of topological defect can be regarded as a superposition of an emergent magnetic monopole and an antimonopole, around which the source and drain of the magnetic flux overlap in space. We experimentally prove that the observed spin twist seen in Lorentz transmission electron microscopy reveals the cross section of the superimposed three-dimensional structure, providing a straightforward strategy for the observation of magnetic singularities. Such a quasiparticle provides an excellent platform for studying the rich physics of emergent electromagnetism.
AB - A three-dimensional singular point that consists of two oppositely aligned emergent monopoles is identified in continuous CoTb thin films, as confirmed by complementary techniques of resonant elastic x-ray scattering, Lorentz transmission electron microscopy, and scanning transmission x-ray microscopy. This new type of topological defect can be regarded as a superposition of an emergent magnetic monopole and an antimonopole, around which the source and drain of the magnetic flux overlap in space. We experimentally prove that the observed spin twist seen in Lorentz transmission electron microscopy reveals the cross section of the superimposed three-dimensional structure, providing a straightforward strategy for the observation of magnetic singularities. Such a quasiparticle provides an excellent platform for studying the rich physics of emergent electromagnetism.
UR - http://hdl.handle.net/10754/673756
UR - https://link.aps.org/doi/10.1103/PhysRevLett.127.217201
U2 - 10.1103/physrevlett.127.217201
DO - 10.1103/physrevlett.127.217201
M3 - Article
SN - 0031-9007
VL - 127
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
ER -