| Zugriffsnummer | 25331 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | A quantum impedance standard having an insignificant, experimentally verified frequency dependence |
| Autor(in); Institution |
Schurr, Jürgen; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Kucera, Jan; 2.1, Gleichstrom und Niederfrequenz, PTB-Braunschweig
Pierz, Klaus; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Kibble, Bryan P.; guest scientist, Hampton, Middlesex, UK
|
| Quelle/Jahr | 2010 Conference on Precision Electromagnetic Measurements digest:(2010), 320 - 321 |
| Herausgeber(in) |
Song, Yang Sup
|
| ISBN | 978-1-4244-6794-5 (print) ; 978-1-424-46796-9 (CD-ROM) |
| Verlag | Piscataway, NJ: IEEE Operations Center |
| Konferenzangaben | 2010 Conference on Precision Electromagnetic Measurements, Daejeon, 13-18, June, 2010, South Korea |
| Zusammenfassung | Recently we have published a novel double-shield configuration of quantum Hall devices to eliminate the effect of all presently known ac losses within 3 × 10-9 kHz-1. Now we have further verified the double-shielding technique by supporting the experimental findings with a model. This model indicates that it should be possible to reduce the frequency dependence to less than 1 × 10-9 kHz-1, which would be better than our ultimate measuring limit and much better than our calculable impedance artefacts. Thereby, the ac quantum Hall impedance closely approaches a perfect quantum standard. |
