Current-phase relation and flux-dependent thermoelectricity in Andreev interferometers
Pavel E. Dolgirev, Mikhail S. Kalenkov, Andrei D. Zaikin
DOI 10.1103/PhysRevB.97.054521 · Physical Review B
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Abstract
We predict a novel current-phase relation in multiterminal Andreev interferometers that emerges from an interplay between long-range quantum coherence and nonequilibrium effects. Under nonzero bias V the current-phase relation IS(ϕ) resembles that of a ϕ0 junction differing from the latter due to a nonzero average I0(V)=IS(ϕ)ϕ. The flux-dependent thermopower S(Φ) of the system has a similar form to that of the current-phase relation and in certain limits it can reduce to an either odd or even function of Φ in agreement with a number of experimental observations.
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