Fizika Nizkikh Temperatur: Volume 45, Number 9 (September 2019), p. 1192-1201 ( to contents , go back )
Dynamics of Abrikosov’s vortex forced oscillations: role frequency, acting forces and vortex parameters
V.F. Rusakov1, V.V. Chabanenko2, A. Nabiałek3, O.M. Chumak2,3, and R. Puźniak3
1Vasyl’ Stus Donetsk National University, 600-richya Str. 21, Vinnytsia 21021, Ukraine
2О.О. Galkin Donetsk Institute of Physics and Engineering, 46 Nauki Ave., Kyiv 03680, Ukraine
3Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
Received March 14, 2019, published online July 26, 2019
The trajectories of motion of an isolated Abrikosov vortex in the anisotropic YBa2Cu3O7 superconductor under the influence of an external periodic, damping into the sample force, were constructed and analyzed, taking into account the inert properties of the vortex and the forces acting on it: pinning, Lorentz, elasticity and elm. The hierarchy of the influence of various forces in a wide frequency range (~ 1 THz) of the driving force on the shape and size of the trajectory is established. The calculated energy absorption by the vortex, as a function of frequency, has resonant peaks: one low frequency associated with the de Gennes and Matricon mode, the second high frequency taking into account the effective mass of the vortex. The differences in the manifesta-tion of vortex-induced oscillations for different field orientations in YBa2Cu3O7 and for the isotropic low-temperature superconductor NbTi are analyzed.
Key words: Abrikosov’s vortex dynamics, trajectory of vortex oscillation, vortex elasticity, Lorentz force.