Namangan Institute of Engineering and Technology
nammti.uz
10.25.2023
Pg.240
formula (1). At N=0, we find that the bottom of the conduction band and the top of the valence
band shift when changing so that the band gap increases [2]:
1
( )
(0)
(
)
(0)
2
2
g
g
z
g
z
n
p
r
e
e
e
E B
E
B
E
B
m
m
m
(1)
As can be seen from expression (1), for parabolic zones this shift is proportional to the
z
B
magnetic induction. Nonlinear dependence can arise due to the nonparabolicity of the zones. The
corresponding shift of the intrinsic absorption edge was also obtained experimentally.
Thus, the above models can be used to explain the dependence of the band gap on a strong
magnetic field in semiconductors with a nonparabolic dispersion law.
