5 papers
Quantum Desynchronization of Limit Cycles
Hans Christiansen, Jens Paaske
It is well known from classical physics that weakly coupled self-sustained oscillators may spontaneously lock their phases. Just like classical synchronization is known to break do…
Topological surface states revealed by the Zeeman effect in superconducting UTe2
Zhen Zhu, Hans Christiansen, Yudi Huang +11
Intrinsic topological superconductors with protected boundary modes obeying non-Abelian statistics constitute a vanishingly small class of quantum materials. A defining spectroscop…
Visualizing the low-energy electronic structure of the triplet superconductor UTe through quasiparticle interference
Anuva Aishwarya, Hans Christiansen, Sheng Ran +6
The identification, control and theoretical modelling of spin-triplet superconductors (STC) remain a central theme in quantum materials research. Intrinsic STC are rare but offer r…
Nodal superconducting gap structure and topological surface states of UTe
Hans Christiansen, Max Geier, Brian M. Andersen +1
The heavy-fermion compound UTe is a candidate for hosting intrinsic spin-triplet superconductivity. At present, however, the type of triplet Cooper pairing realized in UTe…
Quasiparticle Interference of Spin-Triplet Superconductors: Application to UTe
Hans Christiansen, Brian M. Andersen, P. J. Hirschfeld +1
Quasiparticle interference (QPI) obtained from scanning tunneling microscopy (STM) is a powerful method to help extract the pairing symmetry of unconventional superconductors. We e…