Details

Autor(en) / Beteiligte

• Meair, Jonathan
• Jacquod, Philippe

Titel

Macroscopic coherent rectification in Andreev interferometers

Ist Teil von

• Journal of physics. Condensed matter, 2012-07, Vol.24 (27), p.272201-272201

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2012

Quelle

MEDLINE

Beschreibungen/Notizen

• We investigate nonlinear transport through quantum coherent metallic conductors contacted to superconducting components. We find that in certain geometries, the presence of superconductivity generates a large, finite-average rectification effect. Specializing to Andreev interferometers, we show that the direction and magnitude of rectification can be controlled by a magnetic flux tuning the superconducting phase difference at two contacts. In particular, this results in the breakdown of an Onsager reciprocity relation at finite bias. The rectification current is macroscopic in that it scales with the linear conductance, and we find that it exceeds 5% of the linear current at sub-gap biases of a few tens of microelectronvolts.