A quasi-one-dimensional electron system is described by
where 
. The band is partially filled so that the Fermi lines
are open, as indicated in Figure 9.2.
Due to ``Fermi surface nesting", at low temperatures the susceptibility 
develops peaks at certain values of 
. Determine
the peak position 
as a function of 
for
.
Figure 9.2: Contour plot of the energy surface for a quasi-one-dimensional
electron system described by Eq. 9.10, for 
.
The occupied electronic states are shaded, and the thick solid lines
represent the Fermi lines.
Laszlo Mihaly
Thu Oct 31 13:23:11 EST 1996
Cover Page
.
