Current-phase relation and flux-dependent thermoelectricity in Andreev interferometers

Abstract

We predict a novel $(I_0,{\varphi }_0)$-junction state of multi-terminal Andreev interferometers that emerges from an interplay between long-range quantum coherence and non-equilibrium effects. Under non-zero bias $V$ the current-phase relation $I_S(\varphi )$ resembles that of a ${\varphi }_0$-junction differing from the latter due to a non-zero average $I_0(V)={⟨I_S(\varphi )⟩}_{\varphi }$. The flux-dependent thermopower $\mathcal{S}(\Phi )$ of the system exhibits features similar to those of a $(I_0,{\varphi }_0)$-junction and in certain limits it can reduce to either odd or even function of $\Phi$ in the agreement with a number of experimental observations.

References in corpus (7)

• Observation of thermoelectric currents in high-field superconductor-ferromagnet tunnel junctions
• Thermopower induced by a supercurrent in superconductor-normal-metal structures
• Theory of a large thermoeffect in superconductors doped with magnetic impurities
• Resolving thermoelectric paradox in superconductors
• Thermopower oscillations in mesoscopic Andreev interferometers
• Large thermoelectric effect in ballistic Andreev interferometers
• Enhancement of thermoelectric effect in diffusive superconducting bilayers with magnetic interfaces

Cited by in corpus (11)

• Observation of Anomalous Josephson Effect in Nonequilibrium Andreev Interferometers
• Interplay between Josephson and Aharonov-Bohm effects in Andreev interferometers
• Phase-sensitive thermoelectricity and long-range Josephson effect supported by thermal gradient
• Topology-controlled thermopower oscillations in multiterminal Andreev interferometers
• Phase coherent electron transport in asymmetric cross-like Andreev interferometers
• Josephson Diode Effect from Nonequilibrium Current in a Superconducting Interferometer
• Phase-coherent thermoelectricity and non-equilibrium Josephson current in Andreev interferometers
• Phase-coherent thermoelectricity in superconducting hybrids (Brief Review)
• Bipolar thermoelectricity in S/I/NS and S/I/SN superconducting tunnel junctions
• Anomalous Andreev interferometer: Study of an anomalous Josephson junction coupled to a normal wire
• Spontaneous symmetry breaking-induced thermospin effect in superconducting tunnel junctions