Skyrmion lattice annihilation by point defects in the multiferroic Cu 2 OSeO 3 - CentraleSupélec Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2023

Skyrmion lattice annihilation by point defects in the multiferroic Cu 2 OSeO 3

Résumé

First-principles-based effective Hamiltonian simulations are used to reveal the hidden connection between various topological defects, namely point defects and skyrmions, in copper oxide selenite (Cu2OSeO3). Using this approach, we show that (i) Cu2OSeO3 hosts different topological defects with a nonzero local topological charge in various regions of the magnetic-field-temperature phase diagram (H, T ), (ii) point defects exert external pressure on skyrmions leading to their gradual annihilation as temperature increases, and (iii) this annihilation of skyrmions is a result of the melting of the lattice into a glassylike state of spins that connects with the paramagnetic phase.
Fichier non déposé

Dates et versions

hal-04279193 , version 1 (10-11-2023)

Identifiants

Citer

Houssam Sabri, Igor Kornev. Skyrmion lattice annihilation by point defects in the multiferroic Cu 2 OSeO 3. Physical Review B, 2023, 108 (14), pp.L140401. ⟨10.1103/PhysRevB.108.L140401⟩. ⟨hal-04279193⟩
10 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More