Effect of Quantum Hall State of Substrate on Single-Electron Transport of Carbon Nanotube Quantum Dots
| Autor: | Tomohiro Yamaguchi, Masaki Suzuki, Satoshi Moriyama, Takeo Tsukamoto, Koji Ishibashi |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Condensed matter physics Quantum point contact General Engineering General Physics and Astronomy Fermi energy Carbon nanotube Substrate (electronics) Quantum Hall effect Condensed Matter::Mesoscopic Systems and Quantum Hall Effect law.invention Carbon nanotube quantum dot Condensed Matter::Materials Science law Quantum dot Fermi gas |
| Zdroj: | Japanese Journal of Applied Physics. 48:015001 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.1143/jjap.48.015001 |
| Popis: | The effect of the quantum Hall state of a GaAs/AlGaAs two-dimensional electron gas (2DEG) substrate on the single-electron transport of carbon nanotube (CNT) quantum dots (QDs) has been investigated when the 2DEG substrate was used as a back gate to CNT QDs. We found that the gating to CNT QDs through the 2DEG was not effective when the transverse resistance of the 2DEG was on the Hall plateau, whereas it is effective when the transverse resistance of the 2DEG was not on the Hall plateau. The possible origin of the effect is the transition of the electronic state of the 2DEG at the Fermi energy from the extended state to the localized state. |
| Databáze: | OpenAIRE |
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