Title :

Nonequilibrium fluctuation relations in a quantum coherent conductor

Author(s) :

Nakamura, S. [Auteur]
Yamauchi, Y. [Auteur]
Hashisaka, M. [Auteur]
Chida, K. [Auteur]
Kobayashi, K. [Auteur]
Ono, T. [Auteur]
Leturcq, R. [Auteur]
Ensslin, K. [Auteur]
Saito, K. [Auteur]
Utsumi, Y. [Auteur]
Gossard, A.C. [Auteur]

Journal title :

Physical Review Letters

Pages :

080602

Publisher :

American Physical Society

Publication date :

2010

ISSN :

0031-9007

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]

English abstract : [en]

We experimentally demonstrate the validity of non-equilibrium fluctuation relations by using a quantum coherent conductor. In equilibrium the fluctuation-dissipation relation leads to the correlation between current and ...
Show more >We experimentally demonstrate the validity of non-equilibrium fluctuation relations by using a quantum coherent conductor. In equilibrium the fluctuation-dissipation relation leads to the correlation between current and current noise at the conductor, namely, Johnson-Nyquist relation. When the conductor is voltage-biased so that the non-linear regime is entered, the fluctuation theorem has predicted similar non-equilibrium fluctuation relations, which hold true even when the Onsager-Casmir relations are broken in magnetic fields. Our experiments qualitatively validate the predictions as the first evidence of this theorem in the non-equilibrium quantum regimeShow less >

Language :

Anglais

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL