3 papers
cond-mat.str-el2024
Quantum Magnetic Skyrmion Operator
Andreas Haller, Sebastián A. Díaz, Wolfgang Belzig +1
We propose a variational wave function to represent quantum skyrmions as bosonic operators. The operator faithfully reproduces two fundamental features of quantum skyrmions: their…
cond-mat.supr-con2023
Manipulating Vortices with Domain Walls in Superconductor-Ferromagnet Heterostructures
Sebastián A. Díaz, Jonas Nothhelfer, Kjetil M. D. Hals +1
Vortices are point-like topological defects in superconductors whose motion dictates superconducting properties and controls device performance. In superconductor-ferromagnet heter…
cond-mat.mes-hall2020
Chiral Hinge Magnons in Second-Order Topological Magnon Insulators
Alexander Mook, Sebastián A. Díaz, Jelena Klinovaja +1
When interacting spins in condensed matter order ferromagnetically, their ground state wave function is topologically trivial. Nonetheless, in two dimensions, the ferromagnetic sta…