Majorana-Weyl crossings in topological multiterminal junctions
Majorana-Weyl crossings in topological multiterminal junctions
We analyze the Andreev spectrum in a four-terminal Josephson junction between one-dimensional topological superconductors in class D. We find that a topologically protected crossing in the space of three superconducting phase differences can occur between the two lowest Andreev bound states. This crossing can be detected through the transconductance quantization, …