The so-called pseudogap is a feature of high-Tc superconductors that has puzzled scientists since its discovery. It is of widespread opinion that this feature is associated with a structural symmetry breaking. Now, a highly sensitive scanning tunnelling microscopy experiment shows that a specific structural symmetry is not, as many believed, at the origin of the pseudogap state.
- Ilija Zeljkovic
- Elizabeth J. Main
- Jennifer E. Hoffman
