My PhD thesis - Condensed Matter Theory - Imperial College London

CHAPTER 8. APPLYING THE PLASMON NORMAL MODE THEORY TO
SLAB SYSTEMS
0.6
LDA
plasmon u
0.5
0.4
n(z)
0.3
0.2
0.1
0
0 s
z
Figure 8.21: Electron density profile for the bounded slab, with the plasmon two-body term only.
The long-ranged correlations alter the density drastically, as in the unbounded slab; electrons are
pushed to the slab edges.
pletely changes the electron density when used without the corresponding one-body
function; this is illustrated in figure 8.21. When the one-body function is applied,
the density is very close to the LDA result, as can be seen in figure 8.22. The
correction is better here than in the unbounded slab. Consequently, the energy is
lower than that achieved with the full short-ranged Jastrow factor; the density for
this configuration, shown in figure 8.23, is as good as that for the plasmon Jastrow
factor, but the energy is higher.
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