Skyrmion spin texture in ferromagnetic semiconductor-superconductor heterostructures
2014 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 89, no 13, 134518- p.Article in journal (Refereed) Published
We provide a derivation of a spin Skyrmion number classification for two-dimensional topological superconductors constructed from ferromagnetic and Rashba spin-orbit coupled semiconductor-superconductor heterostructures. We show that in the nontrivial topological phase, characterized by a nonzero Chern number, there is always a topological spin texture in the occupied bands represented by a Skyrmion number. The Skyrmion number has the advantage of being both physically intuitive and directly measurable using spin-sensitive band structure imaging techniques. In addition, we show that the Skyrmion classification can be extended to the equivalent one-dimensional topological superconductors.
Place, publisher, year, edition, pages
2014. Vol. 89, no 13, 134518- p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-227201DOI: 10.1103/PhysRevB.89.134518ISI: 000335498000004OAI: oai:DiVA.org:uu-227201DiVA: diva2:729783