45 citations · 68 across the 2 of their papers we have counts for
3 papers
Topological Phases on Quantum Trees
Alex Westström, Wenbu Duan, Kangpei Yao +3
In this work, we present a theory for topological phases for quantum systems on tree graphs. Conventionally, topological phases of matter have been studied in regular lattices, but…
Skyrmion-induced subgap states in p-wave superconductors
Kim Pöyhönen, Alex Westström, Sergey S. Pershoguba +2
In s-wave systems, it has been theoretically shown that a ferromagnetic film hosting a skyrmion can induce a bound state embedded in the opposite-spin continuum. In this work, we c…
Topological properties of helical Shiba chains with general impurity strength and hybridization
Alex Westström, Kim Pöyhönen, Teemu Ojanen
Recent experiments announced an observation of topological superconductivity and Majorana quasiparticles in Shiba chains, consisting of an array of magnetic atoms deposited on top…