Proximity effects in superconducting hybrid structures with spin-dependent interactions
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- Institutt for fysikk 
When superconductors are contacted by other, non-superconducting materials, the latter may attain some of the properties of the former, and vice versa. This is the origin of a wealth of interesting phenomena. A striking example is the coexistence of superconductivity and ferromagnetism in superconductor-ferromagnet hybrid structures, which under certain conditions gives rise to dissipationless spin transport. In this work a variety of superconducting hybrid structures are investigated theoretically using the quasiclassical Green function formalism. Focus is given to two- and three-dimensional geometries, the study of which has been made possible with the use of a numerical framework known as the finite element method. Among several topics discussed are superconducting vortices nucleated in non-superconducting materials without the application of external magnetic fields. The generation of long ranged triplet superconducting correlations in superconductor-ferromagnet structures is also explored, either as generated by an inhomogeneity of the magnetisation, or by spin-orbit coupling.
Has partsPaper 1: Amundsen, Morten; Linder, Jacob. General solution of 2D and 3D superconducting quasiclassical systems: Coalescing vortices and nanoisland geometries. Scientific Reports 2016 ;Volum 6. s. -
Paper 2: Linder, Jacob; Amundsen, Morten; Ouassou, Jabir Ali. Microwave control of the superconducting proximity effect and minigap in magnetic and normal metals. Sci Rep 6, 38739 (2016).
Paper 3: Amundsen, Mmorten., Ouassou, Jabir Ali. & Linder, Jacob. Analytically determined topological phase diagram of the proximity-induced gap in diffusive n-terminal Josephson junctions. Sci Rep 7, 40578 (2017).
Paper 4: Amundsen, Morten; Linder, Jacob. Supercurrent vortex pinball via a triplet Cooper pair inverse Edelstein effect. Physical review B (PRB) 2017 ;Volum 96.(6) s. -
Paper 5: Linder, Jacob; Amundsen, Morten; Risinggård, Vetle Kjær. Intrinsic superspin Hall current. Physical review B (PRB) 2017 ;Volum 96.(9) s. -
Paper 6: Lahabi, Kaveh; Amundsen, Morten; Ouassou, Jabir Ali; Beukers, Ewout; Pleijster, Menno; Linder, Jacob; Alkemade, Paul; Aarts, Jan. Controlling supercurrents and their spatial distribution in ferromagnets. Nature Communications 2017 ;Volum 8. s. -
Paper 7: Amundsen, Morten; Ouassou, Jabir Ali; Linder, Jacob. Field-free nucleation of antivortices and giant vortices in non-superconducting materials. Physical Review Letters 2018 ;Volum 120.(20)
Paper 8: Amundsen, Morten; Hugdal, Henning Goa; Sudbø, Asle; Linder, Jacob. Vortex spin valve on a topological insulator. Physical review B (PRB) 2018 ;Volum 98.(14) s. 1-4
Paper 9: Hugdal, Henning Goa; Amundsen, Morten; Linder, Jacob; Sudbø, Asle. Inverse proximity effect in s-wave and d-wave superconductors coupled to topological insulators. Physical review B (PRB) 2019 ;Volum 99.(9) s. -
Paper 10: Amundsen, Morten; Linder, Jacob. Quasiclassical theory for interfaces with spin-orbit coupling. Physical review B (PRB) 2019 ;Volum 100.(6) s. -
Paper 11: Eskilt, Johannes Røsok; Amundsen, Morten; Banerjee, Niladri; Linder, Jacob. Long-ranged triplet supercurrent in a single in-plane ferromagnet with spin-orbit coupled contacts to superconductors. Physical review B (PRB) 2019 ;Volum 100.(22) s. -
Paper 12: Amundsen, Morten; Linder, Jacob. Spin accumulation induced by a singlet supercurrent. arXiv
Paper 13: Fyhn, Eirik Holm; Amundsen, Morten; Zalic, Ayelet; Dvir, Tom; Steinberg, Hadar; Linder, Jacob. Combined Zeeman and orbital effect on the Josephson effect in rippled graphene. Physical Review B. Condensed Matter and Materials Physics 2020 ;Volum 102.