Thursday, July 25, 2013

1307.6306 (A. V. Galaktionov et al.)

Current-biased Andreev interferometer    [PDF]

A. V. Galaktionov, A. D. Zaikin
We theoretically investigate the behavior of Andreev interferometers with three superconducting electrodes in the current-biased regime. Our analysis allows to predict a number of interesting features of such devices, such as both hysteretic and non-hysteretic behavior, negative magnetoresistance and two different sets of singularities of the differential resistance at subgap voltages. In the non-hysteretic regime we find a pronounced voltage modulation with the magnetic flux which can be used for improving sensitivity of Andreev interferometers.
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