Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States

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dc.contributor.authorKataoka, M
dc.contributor.authorJohnson, N
dc.contributor.authorEmary, C
dc.contributor.authorSee, P
dc.contributor.authorGriffiths, JP
dc.contributor.authorJones, GAC
dc.contributor.authorFarrer, I
dc.contributor.authorPepper, M
dc.contributor.authorJanssen, TJBM
dc.date.accessioned2019-04-26T08:57:04Z
dc.date.available2019-04-26T08:57:04Z
dc.date.issued22/03/16
dc.descriptionWe report time-of-flight measurements on electrons traveling in quantum Hall edge states. Hot-electron wave packets are emitted one per cycle into edge states formed along a depleted sample boundary. The electron arrival time is detected by driving a detector barrier with a square wave that acts as a shutter. By adding an extra path using a deflection barrier, we measure a delay in the arrival time, from which the edge-state velocity v is deduced. We find that v follows 1=B dependence, in good agreement with the E × B drift. The edge potential is estimated from the energy dependence of v using a harmonic approximation.
dc.identifier.urihttps://dspace7-entities.atmire.com/handle/atmire/447
dc.languageen
dc.publisherAmerican Physical Society
dc.titleTime-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States
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