[seminar] SEMINAR Monday 21.10 at 15:00, IRB III wing

[Oleg Antipin]

SEMINAR
Monday 21.10 at 15:00,
IRB III wing

Speaker:
Petar Mali

Title:
Complexity of Shapiro steps

Abstract:
We demonstrate on the example of the dc+ac driven overdamped
Frenkel-Kontorova model that
an easily calculable measure of complexity can be used for the
examination of Shapiro steps in
presence of thermal noise. In real systems, thermal noise causes melting
or even disappearance of
Shapiro steps, which makes their analysis in the standard way from the
response function difficult.
Unlike in the conventional approach, here, by calculating the Kolmogorov
complexity of certain
areas in the response function we were able to detect Shapiro steps,
measure their size with desired
precision and examine their temperature dependence. The aim of this work
is to provide scientists,
particularly experimentalists, an unconventional but a practical and
easy tool for examination of
Shapiro steps in real systems.