Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States
We 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...
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| Autori principali: | , , , , , , , , , |
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| Altri autori: | |
| Lingua: | inglese |
| Pubblicazione: |
American Physical Society
2019
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| Accesso online: | https://demo7.dspace.org/handle/123456789/447 |
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| _version_ | 1860822453991768064 |
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| author | Kataoka, M Johnson, N Emary, C See, P Griffiths, JP Jones, GAC Farrer, I Ritchie, David Pepper, M Janssen, TJBM |
| author2 | Laboratory of Adsorption and Catalysis (LADCA) |
| author_browse | Emary, C Farrer, I Griffiths, JP Janssen, TJBM Johnson, N Jones, GAC Kataoka, M Laboratory of Adsorption and Catalysis (LADCA) Pepper, M Ritchie, David See, P |
| author_facet | Laboratory of Adsorption and Catalysis (LADCA) Kataoka, M Johnson, N Emary, C See, P Griffiths, JP Jones, GAC Farrer, I Ritchie, David Pepper, M Janssen, TJBM |
| author_sort | Kataoka, M |
| collection | DSpace |
| description | We 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. |
| id | oai:localhost:123456789-447 |
| institution | DSPACE.FCHPT |
| language | English |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | American Physical Society |
| publisherStr | American Physical Society |
| record_format | dspace |
| spelling | oai:localhost:123456789-4472021-04-07T16:30:12Z Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States Kataoka, M Johnson, N Emary, C See, P Griffiths, JP Jones, GAC Farrer, I Ritchie, David Pepper, M Janssen, TJBM Laboratory of Adsorption and Catalysis (LADCA) We 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. 2019-04-26T08:57:04Z 2019-04-26T08:57:04Z 22/03/16 https://demo7.dspace.org/handle/123456789/447 en American Physical Society |
| spellingShingle | Kataoka, M Johnson, N Emary, C See, P Griffiths, JP Jones, GAC Farrer, I Ritchie, David Pepper, M Janssen, TJBM Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States |
| title | Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States |
| title_full | Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States |
| title_fullStr | Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States |
| title_full_unstemmed | Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States |
| title_short | Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum Hall Edge States |
| title_sort | time of flight measurements of single electron wave packets in quantum hall edge states |
| url | https://demo7.dspace.org/handle/123456789/447 |
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