11 papers
Majorana bound states in anisotropic and tilted Dirac and Weyl systems
Abraham Kaleb Plascencia Pérez Páez, Alireza Qaiumzadeh
Topological superconductors host Majorana boundary modes whose robustness is protected by the nontrivial topology of the bulk Bogoliubov quasiparticle spectrum. While Majorana boun…
Inherent electro-optic Kerr rotation
Erlend Syljuåsen, Alireza Qaiumzadeh, Rembert A. Duine +1
We uncover a previously overlooked contribution to the electro-optic Kerr rotation of reflected light, arising from the interplay of matter, the static electric field, and the magn…
Thickness-dependent magnon spin transport in antiferromagnetic insulators: Crossover from quasi-three-dimensional to quasi-two-dimensional regimes
Mathias à san Myhre, Verena Brehm, Thomas Delvaux +2
Motivated by the recent observation of giant room-temperature magnon spin conductivity in an ultrathin ferromagnetic insulator [X.-Y. Wei et al., Nat. Mater. 21, 1352 (2022)], we i…
Magnon and photon blockade in a hybrid antiferromagnet-cavity quantum system
Vemund Falch, Arne Brataas, Alireza Qaiumzadeh
We investigate both magnon and photon blockade for an antiferromagnetic insulator coupled to a linearly polarized cavity mode. We focus on the cross-Kerr nonlinearity between the t…
Quantum geometry and magnon Hall transport in an altermagnet
Erlend Syljuåsen, Alireza Qaiumzadeh, Asle Sudbø
We compute magnon Hall conductivities in a minimal model of a two-dimensional altermagnet. To do so, we derive an analytic expression for the relevant quantum geometric tensor desc…
Theory of magnon hydrodynamics in collinear antiferromagnets
Vivianne OlguÃn-Arias, Alireza Qaiumzadeh, Roberto E. Troncoso
We investigate the transport of spin angular momentum and linear momentum carried by magnons in electrically insulating collinear antiferromagnets (AFs). Focusing on both transvers…