Using the same method of our previous calculations for graphite, we discuss Scanning Tunneling Spectroscopy of LiC6chosen as the simplest prototype donor graphite intercalate. Most of the spectral features can be qualitatively interpreted by a rigid band shift of ∼ 2eV over clean graphite. However a few exceptions occur, the most noticeable being a split π* state rather different from graphite. The corrugation ξ(V) is in general smaller than in graphite, in particular ξ(0) falls from ∼1-1.5 Å (graphite) to ∼0.2-0.4 Å (LiC6). The corrugation of LiC6falls rapidly to zero with increasing voltage, due to tunneling into the smooth empty interlayer state.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Mathematical Physics
- Condensed Matter Physics