Abstract
We present local tunneling microscopy and spectroscopy measurements at low temperatures in single crystalline samples of the magnetic superconductor . The electronic local density of states shows a striking departure from -wave BCS theory with a finite value at the Fermi level, which amounts to half of the normal phase density of states.
- Received 5 September 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.027003
©2006 American Physical Society