Phase sensitive shot noise in an Andreev interferometer
| Type of Publication: | Journal article |
| URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-33357 |
| Author: | Reulet, Bertrand; Kozhevnikov, Alexay A.; Prober, Daniel E.; Belzig, Wolfgang; Nazarov, Yuli V. |
| Year of publication: | 2003 |
| Published in: | Physical Review Letters ; 90 (2003), 6. - 6660 |
| DOI (citable link): | https://dx.doi.org/10.1103/PhysRevLett.90.066601 |
| Summary: |
We investigate nonequilibrium noise in a diffusive Andreev interferometer, in which currents emerging from two normal metal/superconductor (N-S) interfaces can interfere. We observe a modulation of the shot noise when the phase difference between the two N-S interfaces is varied by a magnetic flux. This is the signature of phase-sensitive fluctuations in the normal metal. The effective charge inferred from the shot noise measurement is close to qeff = 2e but shows phase-dependent deviations from 2e at finite energy, which we interpret as being due to pair correlations. Experimental data are in good agreement with predictions based on an extended Keldysh Green s function approach.
|
| PACS Classification: | 72.70.+m; 05.40.-a; 42.50.Lc; 73.23.-b |
| Subject (DDC): | 530 Physics |
| Link to License: | In Copyright |
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REULET, Bertrand, Alexay A. KOZHEVNIKOV, Daniel E. PROBER, Wolfgang BELZIG, Yuli V. NAZAROV, 2003. Phase sensitive shot noise in an Andreev interferometer. In: Physical Review Letters. 90(6), 6660. Available under: doi: 10.1103/PhysRevLett.90.066601
@article{Reulet2003Phase-4925, title={Phase sensitive shot noise in an Andreev interferometer}, year={2003}, doi={10.1103/PhysRevLett.90.066601}, number={6}, volume={90}, journal={Physical Review Letters}, author={Reulet, Bertrand and Kozhevnikov, Alexay A. and Prober, Daniel E. and Belzig, Wolfgang and Nazarov, Yuli V.}, note={Article Number: 6660} }
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