Browsing NTNU Open by Author "Sun, Chi"
Now showing items 1-5 of 5
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Andreev reflection in altermagnets
Sun, Chi; Brataas, Arne; Linder, Jacob Wüsthoff (Journal article; Peer reviewed, 2023)Recent works have predicted materials featuring bands with a large spin-splitting distinct from ferromagnetic and relativistically spin-orbit-coupled systems. Materials displaying this property are known as altermagnets ... -
Spin pumping from a ferromagnetic insulator into an altermagnet
Sun, Chi; Linder, Jacob Wüsthoff (Journal article; Peer reviewed, 2023)A class of antiferromagnets with spin-polarized electron bands, yet zero net magnetization, called altermagnets, is attracting increasing attention due to their potential use in spintronics. Here, we study spin injection ... -
Spin pumping from a ferromagnetic insulator to an unconventional superconductor with interfacial Andreev bound states
Sun, Chi; Linder, Jacob Wüsthoff (Journal article; Peer reviewed, 2023)Spin pumping from a ferromagnetic insulator into a high-Tc superconductor with a d-wave superconducting order parameter has recently been experimentally observed. Such unconventional superconducting order is known to ... -
Stability of superconducting gap symmetries arising from antiferromagnetic magnons
Sun, Chi; Mæland, Kristian; Sudbø, Asle (Peer reviewed; Journal article, 2023)We consider a planar heterostructure consisting of a normal metal in proximity to an antiferromagnetic insulator, with an interlayer exchange coupling between the metal and the insulator. The coupling to the two sublattices ... -
Strong-coupling approach to temperature dependence of competing orders of superconductivity: Possible time-reversal symmetry breaking and nontrivial topology
Sun, Chi; Mæland, Kristian; Thingstad, Even; Sudbø, Asle (Peer reviewed; Journal article, 2024)We use strong-coupling Eliashberg theory to study the competition of separate superconducting orders at low temperatures. Specifically, we study magnon-mediated superconductivity in a trilayer heterostructure with a thin ...