Orbital order that does not break the overall crystal lattice symmetry is difficult to observe. Here, the authors use scanning tunneling microscopy on the superconductor CeCoIn5 to detect a signature of the orbital order in quasiparticle interference which is enhanced in the superconducting state, as predicted theoretically.
- Weijiong Chen
- Clara Neerup Breiø
- Andreas Kreisel
