Self-consistency and Charge Transfer

We turn now to the issue of charge self-consistency, which utilizes the theory of 4.3, slightly modified to deal with the fact that there are now two adatoms. Specifically, the Hamiltonian (4.35) is modified to read as 

As mentioned in 8.1, the occupancies (na ) and (n ) are in actuality coupled, but we made a simplifying approximation to uncouple them, by setting to zero the appropriate term in (8.13). Solutions to (8.35) can be calculated numerically, after which the total charge transfer is given by (cf. (4.102)) 

---