Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T00: Poster Session III (1pm-4pm PST)
1:00 PM,
Thursday, March 9, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: T00.00255 : Electronic shot noise in the absence of currents: bounds at zero and finite frequency
Presenter:
Matteo Acciai
(Chalmers Univ of Tech)
Authors:
Matteo Acciai
(Chalmers Univ of Tech)
Ludovico Tesser
(Chalmers Univ of Tech)
Christian Spanslatt
(Chalmers Univ of Tech)
Juliette Monsel
(Chalmers Univ of Tech)
Janine SPLETTSTOESSER
(Chalmers Univ of Tech)
We study such zero-current charge, spin, and heat noises in a two-terminal mesoscopic conductor.
In the presence of voltage, spin and temperature biases, the nonequilibrium (shot) noises of charge, spin, and heat can be arbitrarily large, even if their average currents vanish. However, as soon as a temperature bias is present, additional equilibrium (thermal-like) noise necessarily occurs. We show that this equilibrium noise sets an upper bound on the zero-current charge and spin shot noises, even if additional voltage or spin biases are present. We demonstrate that these bounds can be overcome for heat transport by breaking the spin and electron-hole symmetries, respectively. By contrast, we show that the bound on the charge noise for strictly two-terminal conductors even extends into the finite-frequency regime.
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