Control of magnetism in singlet-triplet superconducting heterostructures

Abstract

We analyze the magnetization at the interface between singlet and triplet superconductors and show that its direction and dependence on the phase difference across the junction are strongly tied to the structure of the triplet order parameter as well as to the pairing interactions. We consider equal spin helical, opposite spin chiral, and mixed symmetry pairing on the triplet side and show that the magnetization vanishes at $\varphi =0$ only in the first case, follows approximately a $\cos \varphi$ behavior for the second, and shows higher harmonics for the last configuration. We trace the origin of the magnetization to the magnetic structure of the Andreev bound states near the interface, and provide a symmetry-based explanation of the results. Our findings can be used to control the magnetization in superconducting heterostructures and to test symmetries of spin-triplet superconductors.

5 pages, 3 figures

References in corpus (8)

• Superconducting Spintronics
• Chiral P-Wave Order in Sr_2RuO_4
• Observation of half-height magnetization steps in Sr2RuO4
• Spin Triplet Superconducting State due to Broken Inversion Symmetry in Li_2Pt_3B
• Electron Correlation and Pairing States in Superconductors without Inversion Symmetry
• Surface bound states and spin currents in non-centrosymmetric superconductors
• Spontaneous spin accumulation in singlet-triplet Josephson junctions
• Ferromagnetic SrRuO3 thin-film deposition on a spin-triplet superconductor Sr2RuO4 with highly conducting interface

Cited by in corpus (6)

• Orientation-dependent Josephson effect in spin-singlet superconductor/altermagnet/spin-triplet superconductor junctions
• Inter-orbital topological superconductivity in spin-orbit coupled superconductors with inversion symmetry breaking
• Topological signatures of the coexistence of antiferromagnetism and odd-parity spin-triplet superconductivity
• Interface currents and magnetization in singlet-triplet superconducting heterostructures: Role of chiral and helical domains
• Magnetic exchange interaction in spin-valve with chiral spin-triplet superconductor
• Triplet Superfluidity on a triangular ladder with dipolar fermions