The authors present microwave emission measurements on a resistively shunted Josephson junction based on a HgTe quantum well. They demonstrate that, with significant spurious inductance in the shunt wiring, additional microwave emission peaks appear at half of the Josephson frequency, which can mimic the 4π-periodicity of topological Andreev states.
- Wei Liu
- Stanislau U. Piatrusha
- Laurens W. Molenkamp
