5 papers
Mechanism for Nodal Topological Superconductivity on PtBi Surface
Kristian Mæland, Giorgio Sangiovanni, Björn Trauzettel
Experiments show that the Weyl semimetal PtBi hosts unconventional superconductivity in its topological surface states. Hence, the material is a candidate for intrinsic topolog…
Phonon-mediated spin-polarized superconductivity in altermagnets
Kristoffer Leraand, Kristian Mæland, Asle Sudbø
We consider the possibility of phonon-mediated unconventional superconductivity in a recently discovered new class of antiferromagnets, dubbed altermagnets. Within a weak-coupling…
Effects of the Hubbard interaction on the quantum metric
Pavlo Sukhachov, Niels Henrik Aase, Kristian Mæland +1
Quantum geometry provides important information about the structure and topology of quantum states in various forms of quantum matter. The information contained therein has profoun…
Strong-coupling approach to temperature dependence of competing orders of superconductivity: Possible time-reversal symmetry breaking and nontrivial topology
Chi Sun, Kristian Mæland, Even Thingstad +1
We use strong-coupling Eliashberg theory to study the competition of separate superconducting orders at low temperatures. Specifically, we study magnon-mediated superconductivity i…
Many-body effects on superconductivity mediated by double-magnon processes in altermagnets
Kristian Mæland, Bjørnulf Brekke, Asle Sudbø
Altermagnets exhibit a large electron spin splitting which can be understood as a result of strong coupling between itinerant electrons and localized spins. We consider superconduc…