Publication Date:
2017-09-06
Description:
We study the critical behavior associated with transient dynamics of vortices near the depinning transition by an ac drive. From ##IMG## [http://ej.iop.org/images/1367-2630/19/9/093001/njpaa819dieqn1.gif] {${I}_{{\rm{ac}},{\rm{e}}}$} – ##IMG## [http://ej.iop.org/images/1367-2630/19/9/093001/njpaa819dieqn2.gif] {${V}_{{\rm{ac}},{\rm{e}}}$} curves at different frequencies f , where ##IMG## [http://ej.iop.org/images/1367-2630/19/9/093001/njpaa819dieqn3.gif] {${I}_{{\rm{ac}},{\rm{e}}}$} and ##IMG## [http://ej.iop.org/images/1367-2630/19/9/093001/njpaa819dieqn4.gif] {${V}_{{\rm{ac}},{\rm{e}}}$} are the effective current and voltage of sinusoidal waveform, respectively, we clearly identify the characteristic voltage separating linear and nonlinear regimes, from which we can estimate the mean diameter of the pinning potential. We also measure the time evolution of the voltage V ac
Electronic ISSN:
1367-2630
Topics:
Physics
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