Regensburg 2022 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 7: Fluctuations, Noise, Magnetotransport, and Related Topics
TT 7.5: Vortrag
Montag, 5. September 2022, 16:00–16:15, H23
General bounds of electronic shot noise in the absence of currents — Jakob Eriksson1, •Matteo Acciai1,2, Ludovico Tesser1, and Janine Splettstoesser1 — 1Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, S-412 96 Göteborg, Sweden — 2University of Gothenburg, S-412 96 Göteborg, Sweden
We investigate the charge and heat electronic noise in a generic two-terminal mesoscopic conductor in the absence of the corresponding charge and heat currents. Despite these currents being zero, shot noise is generated in the system. We show that, irrespective of the conductor’s details and the specific nonequilibrium conditions, the charge shot noise never exceeds its thermal counterpart, thus establishing a general bound [1]. Such a bound does not exist in the case of heat noise, which reveals a fundamental difference between charge and heat transport under zero-current conditions.
[1] Eriksson et al., Phys. Rev. Lett. 127, 136801 (2021)