Berlin 2018 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 71: Poster: Noneq. Stat. Phys., Stoch. Thermo, Brownian Dyn.
DY 71.5: Poster
Thursday, March 15, 2018, 15:30–18:00, Poster A
Extreme values of entropy production in an electronic double dot — •Shilpi Singh1, Edgar Roldan2, Izaak Neri2, Ivan Khaymovich2, Dmitry Golubev1, Ville Maisi1, Joonas Peltonen1, Frank Julicher2, and Jukka Pekola1 — 1Department of Applied Physics, Aalto University, 00076 Aalto, Finland — 2Max Planck Institute for the Physics of Complex Systems, Nothnitzer Strasse 38, 01187 Dresden, Germany
The second law of thermodynamics implies that in mesoscopic systems entropy increases on average but leaves open the possibility for these systems to transiently absorb heat from their environment when driven out of equilibrium. Fluctuation relations relate the probability to dissipate a certain amount of heat and to absorb the same amount of heat during a fixed time interval and have been confirmed in experiments. Extreme-value statistics of thermodynamic fluxes characterize the most extreme deviations from the average behaviors. Here we report on the experimental measurement of stochastic entropy production and of records of negative entropy in a metallic double dot under a constant external bias to realize nonequilibrium steady state. We find that the cumulative distribution of entropy production's negative record and the mean value at all times obey the infimum law presented in [PRX 7, 011019]. Our work provides general bounds and equalities for the extreme-value statistics of correlated random variables about which not much is known. This may help to understand the statistics of overheating events in single-electronic devices which are relevant for the design of reversible computers near Landauer's limit.