Thermospin effects in superconducting heterostructures

Abstract

Recently thermally created pure spin currents were predicted for Zeeman-split superconductor/normal metal heterostructures. Here it is shown that this "thermospin" current can lead to an accumulation of a pure spin imbalance in a system. The thermally induced spin imbalance can reach the value of Zeeman splitting of the superconducting DOS and strongly influences superconductivity in the heterostructure. Depending on the temperature difference between the superconductor and the normal reservoir it can enhance the critical temperature of the superconductor or additionally suppress the zero-temperature superconducting state. The last possibility gives rise to an unusual superconducting state, which starts to develop at finite temperature.

extended and improved version

References in corpus (16)

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• ${\theta }_0$ thermal Josephson junction
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Cited by in corpus (13)

• Colloquium: Nonequilibrium effects in superconductors with a spin-splitting field
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• Superconductivity provides a giant enhancement to the spin battery effect
• Tunable superconducting critical temperature in ballistic hybrid structures with strong spin-orbit coupling
• Spin currents driven by the Higgs mode in magnetic superconductors
• Magnetic proximity effect in superconductor/ferromagnet van der Waals heterostructures: dependence on the number of superconducting monolayers
• Signatures of spin-triplet Cooper pairing in the density of states of spin-textured superconductor-ferromagnet bilayers
• Magnon influence on the superconducting density of states in superconductor$-$ferromagnetic-insulator bilayers
• Reconstruction of the DOS at the end of a S/F bilayer
• Inverse proximity effect in thin-film superconductor/magnet heterostructures with metallic and insulating magnets
• Triplet correlations in superconductor/antiferromagnet heterostructures: dependence on type of antiferromagnetic ordering
• Gate-Tunable Superconducting Spin Valve in a van der Waals Ferromagnet/Superconductor/Ferromagnet Trilayer