CANCELED: Electronic noise in nanoscale conductors
Professor Dvira Segal (University of Toronto, Department of Chemistry)
Host: Professor Patrick Charbonneau
Tuesday, February 18, 2020 - 11:40am to 1:10pm
Location: French Family Science Center 2237
Rosenthal, Janet

Link for Professor Segal

Abstract:  Fluctuations limit sensitive measurements, yet at the same time, noise can unravel properties that are concealed in the averaged signal. I will describe our recent studies of electronic shot noise in nanoscale junctions: We derived theoretical expressions and explained measurements of (i) electronic noise that is generated by temperature differences across conductors [1], and (ii) anomalous-nonlinear electronic shot noise in atomic scale junctions [2]. Furthermore, (iii) I will describe our recent work on the thermodynamic uncertainty relation, a cost-precision trade-off relation, focusing on electronic conductors in nonequilibrium steady state [3-4].

[1] O. Shein-Lumbroso, L. Simine, A. Nitzan, D. Segal, and O. Tal, Nature 562, 240 (2018).
[2] A. Mu, O. Shein Lumbroso, O. Tal and D. Segal, J. Phys. Chem. C 123, 23853 (2019).
[3] B. K. Agarwalla and D. Segal, Phys. Rev. B 98, 155438 (2018).
[4] J. Liu and D. Segal, Phys. Rev. E 99, 062141 (2019).