2018/09/30 by Max T. Birch, M. T. Birch, R. Takagi +18 · 1 citation
Materials Science · Physics and Astronomy · #Condensed matter physics #Dopant #Doping #Magnet #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetic properties of thin films #Materials science #Metastability #Physics #Physics of Superconductivity and Magnetism #Population #Quantum mechanics #Skyrmion #Spins #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.100.014425
published as Phys. Rev. B 100, 014425 (2019) · 9 Pages, 7 Figures, submission in progress
openalex created_date 2018/09/27 · arxiv created 2018/11/28 · openalex publication_date 2019/07/22 · arxiv updated 2019/07/31 · openalex updated_date 2026/08/05
Metastable magnetic skyrmions possess a nonzero temperature-dependent lifetime, which poses an obstacle for their application in devices. Here, the authors show that, for skyrmions in Cu2OSeO3, a small quantity of Zn substitution significantly increases this lifetime, dramatically reducing the cooling rate required to create a substantial metastable population. Time-resolved AC magnetometry measurements suggest that the effect is due to an increase in the pinning-site density that leads to slowing-down the unwinding of the skyrmion lattice, rather than to an alteration of the energy barrier.