Quasiparticle interference with a twist

In a new paper in npj Quantum Materials we show how small rotations of the ruthenium oxide octahedra in the enigmatic superconductor Sr2RuO4 enable us to detect its van Hove singularity, which would otherwise be practically invisible for us due to its orbital character. Modelling of the quasiparticle interference shows excellent agreement with experiment once the rotation of the octahedra is accounted for, resulting in chiral scattering patterns around defects.