Chirality reversal of magnetic solitons in chiral Cr1/3TaS2

Han, Myung-Geun; Garlow, Joseph; Du, Kai; Cheong, Sang-Wook; Zhu, Yimei

doi:10.1063/5.0163385

Chirality reversal of magnetic solitons in chiral Cr_1/3TaS₂

Journal Article · Tue Jul 11 00:00:00 EDT 2023 · Applied Physics Letters

DOI:https://doi.org/10.1063/5.0163385· OSTI ID:2005141

^[1]; Garlow, Joseph ^[1]; Du, Kai ^[2]; ^[2]; ^[1]

Brookhaven National Laboratory (BNL), Upton, NY (United States)
Rutgers University, Piscataway, NJ (United States)

Ferromagnetism in two-dimensional (2D) materials provides an ideal platform to study emergent electromagnetic phenomena in low dimensions for future spintronics. In magnetic-element intercalated transition metal dichalcogenides, topologically nontrivial spin textures, such as chiral helimagnetic spin states and chiral soliton lattices, are realized due to the chiral lattice distortions induced by intercalated magnetic ions. Consequently, the magnetic chirality is predictably determined by the sign of antisymmetric exchange interaction (or Dzyaloshinskii–Moriya interaction, DMI) vector that is coupled to the underlying crystal chirality. Here, using cryogenic Lorentz phase microscopy, we directly observed the chirality reversal behavior of the chiral soliton lattices in Cr_1/3TaS₂ across the structural defects. We show that a partial 1 T stacking in 2H-TaS₂ locally reduces DMI, leading to magnetic chirality reversal with direct atomic resolution imaging. Furthermore, our experimental results show that manipulation of stacking sequence provides a viable way to control the chirality of topologically nontrivial soliton lattices in 2D magnets.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: Gordon and Betty Moore Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012704

OSTI ID:: 2005141

Report Number(s):: BNL--224816-2023-JAAM

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 2 Vol. 123; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Chirality reversal of magnetic solitons in chiral Cr1/3TaS2

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Chirality reversal of magnetic solitons in chiral Cr_1/3TaS₂