Abstract
Quantum point contacts fabricated using a backgated two-dimensional electron-gas system show clear quantized features and a 0.7 anomaly in conductance. Using these density-tunable point contacts, we have studied the behavior of the 0.7 anomaly. The 0.7 step shifts down to around 0.5 as the electron density is decreased under a zero magnetic field. This suggests that electron-electron interactions play an important role in forming the conductance anomalies of quantum point contacts.
| Original language | English |
|---|---|
| Journal | Japanese Journal of Applied Physics, Part 2: Letters |
| Volume | 39 |
| Issue number | 7 A |
| Publication status | Published - 2000 Jul 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
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Nuttinck, S., Hashimoto, K., Miyashita, S., Saku, T., Yamamoto, Y., & Hirayama, Y. (2000). Quantum point contacts in a density-tunable two-dimensional electron gas. Japanese Journal of Applied Physics, Part 2: Letters, 39(7 A).