Volume 101, Number 5, March 2013
|Number of page(s)||3|
|Published online||19 March 2013|
Equilibrium noise correlations in quantum Hall effect devices as a test of a formula by Büttiker
1 INRIM - Istituto Nazionale di Ricerca Metrologica - Strada delle Cacce, 91, 10135 Torino, Italy, EU
2 Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino - Corso Duca degli Abruzzi, 24, 10129 Torino, Italy, EU
3 PTB- Physikalisch-Technische Bundesanstalt - Bundesallee 100, D-38116 Braunschweig, Germany, EU
Received: 14 January 2013
Accepted: 19 February 2013
This work presents an experimental verification of a relation derived by Büttiker (Büttiker M., Phys. Rev. Lett., 65 (1990) 2901) on the correlations between noise voltages at different pair of terminals in multiterminal conductors. Measurements were carried out on several nonreciprocal linear networks realized with a 6-terminal quantum Hall effect device with configurable external connections. For all the configurations tested, the predictions of Büttiker's formula were verified with an uncertainty of a few percent.
PACS: 07.50.Hp – Electrical noise and shielding equipment / 73.43.-f – Quantum Hall effects / 73.63.-b – Electronic transport in nanoscale materials and structures
© EPLA, 2013
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