• Antiferromagnetic magnons as highly squeezed Fock states underlying quantum correlations 

      Kamra, Akashdeep; Thingstad, Even; Rastelli, Gianluca; Duine, Rembert A.; Brataas, Arne; Belzig, Wolfgang; Sudbø, Asle (Peer reviewed; Journal article, 2019)
      Employing the concept of two-mode squeezed states from quantum optics, we demonstrate a revealing physical picture for the antiferromagnetic ground state and excitations. Superimposed on a Néel ordered configuration, a ...
    • Chiral Phonon Transport Induced by Topological Magnons 

      Thingstad, Even; Kamra, Akashdeep; Brataas, Arne; Sudbø, Asle (Peer reviewed; Journal article, 2019)
      The plethora of recent discoveries in the field of topological electronic insulators has inspired a search for boson systems with similar properties. There are predictions that ferromagnets on a two-dimensional honeycomb ...
    • Collective effects in low-dimensional systems with coupled quasiparticles 

      Thingstad, Even (Doctoral theses at NTNU;2021:279, Doctoral thesis, 2021)
      Many of the most fascinating and challenging phenomena in condensed matter physics occur in systems with coupling between quasiparticles of different nature. This thesis is concerned with the study of collective effects ...
    • Eliashberg study of superconductivity induced by interfacial coupling to antiferromagnets 

      Thingstad, Even; Erlandsen, Eirik; Sudbø, Asle (Peer reviewed; Journal article, 2021)
      We perform Eliashberg calculations for magnon-mediated superconductivity in a normal metal, where the electron-magnon interaction arises from interfacial coupling to antiferromagnetic insulators. In agreement with previous ...
    • Phonon-mediated superconductivity in doped monolayer materials 

      Thingstad, Even; Kamra, Akashdeep; Wells, Justin; Sudbø, Asle (Peer reviewed; Journal article, 2020)
      Insight into why superconductivity in pristine and doped monolayer graphene seems strongly suppressed has been central for the recent years' various creative approaches to realize superconductivity in graphene and graphene-like ...
    • Two-Component Spin-Orbit Coupled Ultracold Atoms in the Weak and Strong Coupling Regimes 

      Thingstad, Even (Master thesis, 2017)
      Motivated by recent experimental advances, we study two-component spin-orbit coupled ultracold bosonic atoms in two dimensions on a square optical lattice. Using a Bose-Hubbard model with spin-conserving and non-spin-conserving ...