Abstract
Using transmission electron microscopy, the anomalies in resistivity and magnetic susceptibility at in are found to accompany the superlattice peaks with . The wave vector is consistent with our theoretical calculation for the Fermi surface nesting vector, indicating that the transition is of the charge-orbital density wave (DW) type. We also discovered that both Pd intercalation and substitution induce bulk superconductivity with up to , which competes with DW in a quantum critical pointlike manner.
- Received 17 January 2012
DOI:https://doi.org/10.1103/PhysRevLett.108.116402
© 2012 American Physical Society