Where is the shot noise of a quantum point contact?
Reznikov et al. [Phys. Rev. Lett. 75, 3340 (1995)] have presented definitive observations of nonequilibrium noise in a quantum point contact. Especially puzzling is the “anomalous” peak structure of the excess noise measured at constant current; to date it remains unexplained. We show that their experiment directly reveals the deep link between conservation principles in the electron gas and its low-dimensional, mesoscopic behavior. The keys to that connection are gauge invariance and the...[Show more]
|Collections||ANU Research Publications|
|Source:||Physical Review Letters|
|Green_WhereIs2004.pdf||123.93 kB||Adobe PDF|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.