Question: a) Apply Block's theorem and calculate the following matrix equation. A B k i(k,-k) (a-b) ilk,-k)(a-b) (k,-k) e where k, = -k -i(kk)(a-b) -i(+k)

a) Apply Block's theorem and calculate the following matrix equation. A B

a) Apply Block's theorem and calculate the following matrix equation. A B k i(k,-k) (a-b) ilk,-k)(a-b) (k,-k) e where k, = -k -i(kk)(a-b) -i(+k) (a-b) -(k+k) e JAME k) 2m (E+V) h -k -i (k-10b -(-1)/(kk) (+4) b (1+k) (74) e 4(x) = u(x) 23 C D Floquet exponent

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