TY - JOUR

T1 - Fine energy structure of a magnetic skyrmion localized on a nonmagnetic impurity in an external magnetic field

AU - Potkina, Mariia N.

AU - Lobanov, Igor S.

AU - Uzdin, Valery M.

PY - 2020/12/24

Y1 - 2020/12/24

N2 - The Localization of a magnetic skyrmion on a nonmagnetic defect in a two-dimensional triangular lattice is investigated within the framework of the generalized Heisenberg model, which includes exchange, anisotropy, Dzyaloshinskii–Moriya interaction, and interaction with an external magnetic field. It is shown that there is a threshold magnetic field, below which there are two locally stable positions of the defect inside the skyrmion. The energy difference between the states with a different localization of defects results in a fine energy structure of skyrmions, depending on the strength of the magnetic field.

AB - The Localization of a magnetic skyrmion on a nonmagnetic defect in a two-dimensional triangular lattice is investigated within the framework of the generalized Heisenberg model, which includes exchange, anisotropy, Dzyaloshinskii–Moriya interaction, and interaction with an external magnetic field. It is shown that there is a threshold magnetic field, below which there are two locally stable positions of the defect inside the skyrmion. The energy difference between the states with a different localization of defects results in a fine energy structure of skyrmions, depending on the strength of the magnetic field.

KW - saddle point

KW - minimum energy path

KW - skyrmion

KW - logic device

KW - racetrack memory

UR - https://physcomsys.ru/index.php/physcomsys/article/view/38

M3 - Article

VL - 1

SP - 165

EP - 168

JO - Physics of Complex Systems

JF - Physics of Complex Systems

SN - 2687-153X

IS - 4

ER -