JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@unpublished{sheikhzada:srf2021-tuofdv01,
author = {A. Sheikhzada and A.V. Gurevich},
title = {{Dynamic Penetration Field of Vortices in a Superconductor Under RF Magnetic Field}},
booktitle = {Proc. SRF'21},
% booktitle = {Proc. 20th International Conference on RF Superconductivity (SRF'21)},
intype = {presented at the},
series = {International Conference on RF Superconductivity},
number = {20},
venue = {East Lansing, MI, USA},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2022},
note = {presented at SRF'21 in East Lansing, MI, USA, unpublished},
abstract = {{We address the nonlinear dynamics of penetration of vortices in a superconductor subject to a periodic magnetic field H(t)=H₀\sinω t parallel to the surface. The time-dependent Ginzburg-Landau equations for a gapped superconductor were simulated numerically to calculate the frequency and temperature dependencies of the field onset H_{p}(T,ω) of vortex penetration at T≈ T_{c}. It is shown that H_{p}(T,ω) can exceed the dc superheating field H_{s} at which the Meissner state becomes unstable. Here H_{p}(T,ω) increases with ω and approaches √{2}H_{s}(T) at ωτ≥ 1, where τ(T) is the energy relaxation time of quasiparticles on phonons. We also investigated the effect of surface topographic defects on H_{p}(T,ω) and showed that they can substantially reduce H_{p}(T,ω) and cause additional power dissipation. Ultimately, we draw conclusions by comparing the results of our calculations with recent experimental measurements.}},
}