| Autor: |
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 |
| Předmět: |
|
| Zdroj: |
Nature Communications; 12/15/2023, Vol. 14 Issue 1, p1-9, 9p |
| Abstrakt: |
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.' [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink