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 - Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/11/19
Y1 - 2021/11/19
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://www.scopus.com/inward/record.url?scp=85119952899&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.127.217201
DO - 10.1103/PhysRevLett.127.217201
M3 - Article
C2 - 34860082
AN - SCOPUS:85119952899
SN - 0031-9007
VL - 127
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
M1 - 217201
ER -