θ0 thermal Josephson junction

We predict the thermal counterpart of the anomalous Josephson effect in superconductor/ferromagnet/superconductor junctions with noncoplanar magnetic texture. The heat current through the junction is shown to have the phase-sensitive interference component proportional to cos(theta - theta(0)), where theta is the Josephson phase difference and theta(0) is the texture-dependent phase shift. In the generic trilayer magnetic structure with the spin-filtering tunnel barrier theta(0) is determined by the spin chirality of magnetic configuration and can be considered as the direct manifestation of the energy transport with participation of spin-triplet Cooper pairs. In case of the ideal spin filter the phase shift is shown to be robust against spin relaxation caused by the spin-orbital scattering. Possible applications of the coupling between heat flow and magnetic precession are discussed. For the nonideal spin filters with practically relevant parameters we show that theta(0) is much larger than the phase shift of the equilibrium Josephson current.