Abstract
We have investigated the electronic structure of using x-ray Raman scattering at the boron edge in a single crystal sample. Using both the direction and the magnitude dependence of the momentum transfer we can identify the spatial orientation of empty electronic states with different symmetries. The local symmetry-resolved electronic structure of is analyzed using two independent first-principles computational approaches. We show that near the Fermi level the density of symmetry states is vanishingly small. We also identify and separate the contributions from boron and states, which play an important role in determining the superconducting properties of .
- Received 27 January 2005
DOI:https://doi.org/10.1103/PhysRevLett.94.247003
©2005 American Physical Society