Speaker
Barbora Budinská
(University of Vienna)
Description
The maximal vortex velocities $v^*$ are limited by the flux-flow instability (FFI) and contain information on the scattering mechanisms of charge carriers in the samples. However, the nucleation of FFI does not necessarily occur in the entire sample but can have a local character. Here, we demonstrate that the $v^*$ in superconducting MoSi films with smooth edges can exceed $v^*$ in films with rough edges by an order of magnitude. Our findings indicate that the energy relaxation times deduced from $v^*$ values should be treated with consideration of the microscopic properties and fabrication-induced features of the samples.
Author
Barbora Budinská
(University of Vienna)
Co-authors
Bernd Aichner
(University of Vienna)
Denis Vodolazov
(Russian Academy of Sciences)
Mikhail Mikhailov
(B. Verkin Institute for Low Temperature Physics and Engineering)
Fabrizio Porrati
(Goethe University)
Michael Huth
(Goethe University)
Andrii Chumak
(University of Vienna)
Wolfgang Lang
(University of Vienna)
Oleksandr Dobrovolskiy
(University of Vienna)
