Naslov
Dissipation processes in the insulating skyrmion compound Cu2OSeO3

Autori
Levatić, Ivana ; Šurija, Vinko ; Berger, Helmuth ; Živković, Ivica

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 90 (2014), 22; 224412-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
lattice

Sažetak
We present a detailed study of the phase diagram surrounding the skyrmion lattice (SkL) phase of Cu2OSe2O3 using high-precision magnetic ac susceptibility measurements. An extensive investigation of transition dynamics around the SkL phase using the imaginary component of the susceptibility revealed that at the conical-to- SkL transition a broad dissipation region exists with a complex frequency dependence. The analysis of the observed behavior within the SkL phase indicates a distribution of relaxation times intrinsically related to SkL. At the SkL-to- paramagnet transition a narrow first-order peak is found that exhibits a strong frequency and magnetic field dependence. Surprisingly, very similar dependence has been discovered for the first-order transition below the SkL phase, i.e., where the system enters the helical and conical state(s), indicating similar processes across the order-disorder transition.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA