984 citations · 5.6k across the 155 of their papers we have counts for
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Skyrmion spin texture in ferromagnetic semiconductor-superconductor heterostructures
Kristofer Björnson, Annica M. Black-Schaffer
We provide a derivation of a spin Skyrmion number classification for two-dimensional topological superconductors constructed from ferromagnetic and Rashba spin-orbit coupled semico…
Proximity-induced unconventional superconductivity in topological insulators
Annica M. Black-Schaffer, Alexander V. Balatsky
We study and classify the proximity-induced superconducting pairing in a topological insulator (TI)-superconductor (SC) hybrid structure for SCs with different symmetries. The Dira…
Odd-frequency superconducting pairing in multi-band superconductors
Annica M. Black-Schaffer, Alexander V. Balatsky
We point out that essentially all multi-band superconductors have an odd-frequency pairing component, as follows from a general symmetry analysis of even- and odd-frequency pairing…
Chiral d-wave superconducting state in the core of a doubly quantized s-wave vortex in graphene
Annica M. Black-Schaffer
We show that the intrinsic chiral -wave superconducting pairing in doped graphene is significantly strengthened in the core region of a doubly quantized s-…
Model evidence of a superconducting state with a full energy gap in small cuprate islands
Annica M. Black-Schaffer, Dmitri S. Golubev, Thilo Bauch +2
We investigate subdominant order parameters stabilizing at low temperatures in nano-scale high-T cuprate islands, motivated by the recent observation of a fully gapped state in…
Vortex states and Majorana fermions in spin-orbit coupled semiconductor-superconductor hybrid structures
Kristofer Björnson, Annica M. Black-Schaffer
We study the energy spectrum of a vortex core in a two-dimensional semiconductor with Rashba spin-orbit interaction and proximity-coupled to a conventional superconductor and a fer…