- Tytuł:
- An Improved 2.5 GHz Electron Pump: Single-Electron Transport through Shallow-Etched Point Contacts Driven by Surface Acoustic Waves
- Autorzy:
-
Utko, P.
Gloos, K.
Hansen, J. B.
Lindelof, P. E. - Powiązania:
- https://bibliotekanauki.pl/articles/2035753.pdf
- Data publikacji:
- 2003-06
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
73.63.Kv
72.50.+b
06.20.Jr - Opis:
- We present an experimental study of a 2.5 GHz electron pump based on the quantized acoustoelectric current driven by surface acoustic waves through a shallow-etched point contact in a GaAs/AlGaAs heterostructure. At low temperatures and with an additional counter-propagating surface acoustic waves beam, up to n=20 current plateaus at I=nef could be resolved, where n is an integer, e the electron charge, and f the surface acoustic waves frequency. In the best case the accuracy of the first plateau at 0.40 nA was estimated to beΔ I/I=±25 ppm over 0.25 mV in gate voltage, which is better than previous results.
- Źródło:
-
Acta Physica Polonica A; 2003, 103, 6; 533-538
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł