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Chiral Helimagnetism and One‐Dimensional Magnetic Solitons in a Cr‐Intercalated Transition Metal Dichalcogenide
Author(s) -
Zhang Chenhui,
Zhang Junwei,
Liu Chen,
Zhang Senfu,
Yuan Ye,
Li Peng,
Wen Yan,
Jiang Ze,
Zhou Bojian,
Lei Yongjiu,
Zheng Dongxing,
Song Chengkun,
Hou Zhipeng,
Mi Wenbo,
Schwingenschlögl Udo,
Manchon Aurélien,
Qiu Zi Qiang,
Alshareef Husam N.,
Peng Yong,
Zhang XiXiang
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202101131
Subject(s) - skyrmion , condensed matter physics , materials science , transition metal , soliton , magnetic field , magnet , lattice (music) , chirality (physics) , electron , inductive coupling , physics , quantum mechanics , chemistry , chiral anomaly , biochemistry , nonlinear system , catalysis , fermion , acoustics , nambu–jona lasinio model
Chiral magnets endowed with topological spin textures are expected to have promising applications in next‐generation magnetic memories. In contrast to the well‐studied 2D or 3D magnetic skyrmions, the authors report the discovery of 1D nontrivial magnetic solitons in a transition metal dichalcogenide 2 H ‐TaS 2 via precise intercalation of Cr elements. In the synthetic Cr 1/3 TaS 2 (CTS) single crystal, the coupling of the strong spin–orbit interaction from TaS 2 and the chiral arrangement of the magnetic Cr ions evoke a robust Dzyaloshinskii–Moriya interaction. A magnetic helix having a short spatial period of ≈ 25 nm is observed in CTS via Lorentz transmission electron microscopy. In a magnetic field perpendicular to the helical axis, the helical spin structure transforms into a chiral soliton lattice (CSL) with the spin structure evolution being consistent with the chiral sine‐Gordon theory, which opens promising perspectives for the application of CSL to fast‐speed nonvolatile magnetic memories. This work introduces a new paradigm to soliton physics and provides an effective strategy for seeking novel 2D magnets.