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Dissipation processes in the insulating skyrmion compound Cu2OSeO3 (CROSBI ID 232742)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Levatić, Ivana ; Šurija, Vinko ; Berger, Helmuth ; Živković, Ivica Dissipation processes in the insulating skyrmion compound Cu2OSeO3 // Physical review. B, Condensed matter and materials physics, 90 (2014), 22; 224412-1-224412-9. doi: 10.1103/PhysRevB.90.224412

Podaci o odgovornosti

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

engleski

Dissipation processes in the insulating skyrmion compound Cu2OSeO3

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.

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Podaci o izdanju

90 (22)

2014.

224412-1-224412-9

objavljeno

1098-0121

10.1103/PhysRevB.90.224412

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Fizika

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