Phase-dependent heat transport through magnetic Josephson tunnel junctions

Abstract

We present an exhaustive study of the coherent heat transport through superconductor-ferromagnet(S-F) Josephson junctions including a spin-filter (I${}_{sf}$) tunneling barrier. By using the quasiclassical Keldysh Green's function technique we derive a general expression for the heat current flowing through a S/F/I${}_{sf}$/F/S junction and analyze the dependence of the thermal conductance on the spin-filter efficiency, the phase difference between the superconductors and the magnetization direction of the ferromagnetic layers. In the case of non-collinear magnetizations we show explicitly the contributions to the heat current stemming from the singlet and triplet components of the superconducting condensate. We also demonstrate that the magnetothermal resistance ratio of a S/F/I${}_{sf}$/F/S heat valve can be increased by the spin-filter effect under suitable conditions.

8 pages; 6 figures

References in corpus (23)

• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Single-mode heat conduction by photons
• The Josephson heat interferometer
• Micrometre-scale refrigerators
• Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration
• Thermal rectification in nonlinear quantum circuits
• Mesoscopic photon heat transistor
• Efficient phase-tunable Josephson thermal rectifier
• Superconductors as ideal spin sources for spintronics
• Ultrasensitive Proximity Josephson Sensor with Kinetic Inductance Read-Out
• Electronic transport through ferromagnetic and superconducting junctions with spin-filter tunneling barriers
• Phase Modulated Thermal Conductance of Josephson Weak Links
• Phase-controlled superconducting heat-flux quantum modulator
• Heat transport through a Josephson junction
• Manipulation and Generation of Supercurrent in Out-of-Equilibrium Josephson Tunnel Nanojunctions
• Spin-polarized Josephson and quasiparticle currents in superconducting spin-filter tunnel junctions
• Fully-Balanced Heat Interferometer
• Phase-Dependent Electronic Specific Heat in Mesoscopic Josephson Junctions
• Unanticipated proximity behavior in ferromagnet-superconductor heterostructures with controlled magnetic noncollinearity
• Phase-tunable colossal magneto-heat resistance in ferromagnetic Josephson thermal valves
• Phase sensitive electron-phonon coupling in a superconducting proximity structure
• Influence of interface transmissivity and inelastic scattering on the electronic entropy and specific heat of diffusive SNS Josephson junctions
• Surface effects in magnetic superconductors with a spiral magnetic structure

Cited by in corpus (12)

• Theory of the spin-galvanic effect and the anomalous phase-shift ${\phi }_0$ in superconductors and Josephson junctions with intrinsic spin-orbit coupling
• Observation of thermoelectric currents in high-field superconductor-ferromagnet tunnel junctions
• Towards phase-coherent caloritronics in superconducting circuits
• Thermal, electric and spin transport in superconductor/ferromagnetic-insulator structures
• Ferromagnetic insulator-based superconducting junctions as sensitive electron thermometers
• Fingerprint of topological Andreev bound states in phase-dependent heat transport
• Phase-coherent caloritronics with ordinary and topological Josephson junctions
• Electron refrigeration in hybrid structures with spin-split superconductors
• Manifestation of a spin-splitting field in a thermally-biased Josephson junction
• ${\theta }_0$ thermal Josephson junction
• Heat transport and electron cooling in ballistic normal-metal/spin-filter/superconductor junctions
• Mesoscopic Josephson junctions with switchable current-phase relation