We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Tetrahedral triple-Q magnetic ordering and large spontaneous Hall conductivity in the metallic triangular antiferromagnet Co<sub>1/3</sub>TaS<sub>2</sub>.
- Authors
Park, Pyeongjae; Cho, Woonghee; Kim, Chaebin; An, Yeochan; Kang, Yoon-Gu; Avdeev, Maxim; Sibille, Romain; Iida, Kazuki; Kajimoto, Ryoichi; Lee, Ki Hoon; Ju, Woori; Cho, En-Jin; Noh, Han-Jin; Han, Myung Joon; Zhang, Shang-Shun; Batista, Cristian D.; Park, Je-Geun
- Abstract
The triangular lattice antiferromagnet (TLAF) has been the standard paradigm of frustrated magnetism for several decades. The most common magnetic ordering in insulating TLAFs is the 120° structure. However, a new triple-Q chiral ordering can emerge in metallic TLAFs, representing the short wavelength limit of magnetic skyrmion crystals. We report the metallic TLAF Co1/3TaS2 as the first example of tetrahedral triple-Q magnetic ordering with the associated topological Hall effect (non-zero σxy(H = 0)). We also present a theoretical framework that describes the emergence of this magnetic ground state, which is further supported by the electronic structure measured by angle-resolved photoemission spectroscopy. Additionally, our measurements of the inelastic neutron scattering cross section are consistent with the calculated dynamical structure factor of the tetrahedral triple-Q state. Skyrmion crystals, where skyrmions are arranged close packed in a triangular lattice arise due to the superposition of three magnetic spin spirals, each with a distinct wave vector, Q. Such skrymion crystals have been found in a diverse array of materials. Here, Park et al find a short wavelength (or dense skyrmion) limit of this skyrmion crystal structure in Co1/3TaS2, a metallic triangular lattice antiferromagnet, in the form of a triple Q magnetic ordering, with four magnetic sublattices.'
- Subjects
INELASTIC neutron scattering; MAGNETIC crystals; PHOTOELECTRON spectroscopy; HALL effect; NEUTRON measurement; SKYRMIONS
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-43853-4