Use a program like Mathematica to diagonalize the 4 4 block for the 8 valence
Question:
Use a program like Mathematica to diagonalize the 4 × 4 block for the Γ8 valence band states Hamiltonian (6.11.9) and verify the form of the solution (6.11.11). Determine A,B, and C in terms of l,m, and n.
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Ehh = Ak² ± √ √ B²K+ + C² (k²k²} + k²k² + kk²). V - (6.11.11)
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