18 papers
The fate of odd-parity magnetism in one dimension
Kasper Rettedal Eikeland, Sondre Duna Lundemo, Asle Sudbø
We consider a one-dimensional model for a -wave magnet within the bosonization framework. The model consists of itinerant electrons described by an extended Hubbard model couple…
Fluctuation conductivity in ultraclean multicomponent superconductors
Sondre Duna Lundemo, Asle Sudbø
We consider the intrinsic fluctuation conductivity in metals with multiply sheeted Fermi surfaces approaching a superconducting critical point. Restricting our attention to extreme…
Divergent spin conductivity on the verge of ferromagnetic quantum criticality
Sondre Duna Lundemo, Asle Sudbø
We show that the spin conductivity of a metal approaching a ferromagnetic quantum critical point exhibits divergent fluctuation corrections. This effect arises from critical spin f…
Skyrmion Lattice Domain Formation in a Non-Flat Energy Landscape
Raphael Gruber, Jan Rothörl, Simon M. Fröhlich +9
Magnetic skyrmions are chiral spin structures with non-trivial topology that comprise two-dimensional quasi-particles and are promising information carriers for data storage and pr…
Real-time detection of critical slowing-down at the superconducting phase transition
Guillermo Nava Antonio, Théo Courtois, Corentin Pfaff +5
We employ optical pump-THz probe spectroscopy to chart the ultrafast superconductivity suppression in NbN over a broad range of excitation fluences. Our measurements uncover a pron…
Spin-dependent quasiparticle lifetimes in altermagnets
Kristoffer Leraand, Kristian Mæland, Asle Sudbø
We investigate many-body effects on the spin-split electron bands in altermagnets by computing the electron self-energy arising from interactions with magnons, phonons, and hybridi…