Physics 481: Solid State Physics - Homework Solutions 10

-4

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

2.5

3

3.5

4

ε/t

Γ ΓX W

0 0.5 1 1.5 2 2.5 3

kx

0

0.5

1

1.5

2

2.5

3

k y

ε=-3tε=-2tε=-tε=0ε=tε=2tε=3t