4213) +)-(1+)+风=)+M)o Kn=0;h换为h +)-2+v()(+) (-Kn)=V(n) k2+2 (k2-(+R2)(4.2.13) ℏ2 2𝑚𝑚 𝑘𝑘 + 𝐾𝐾ℎ 2 − 𝐸𝐸 𝑘𝑘 𝑎𝑎 𝑘𝑘 + 𝐾𝐾ℎ + � ℎ′≠ℎ 𝑉𝑉 𝐾𝐾ℎ − 𝐾𝐾ℎ‘ 𝑎𝑎 𝑘𝑘 + 𝐾𝐾ℎ’ =0 𝐾𝐾ℎ = 0; ℎ′ 换为ℎ ℏ2 2𝑚𝑚 𝑘𝑘 + 𝐾𝐾ℎ 2 − 𝐸𝐸 𝑘𝑘 𝑎𝑎 𝑘𝑘 + � ℎ≠0 𝑉𝑉 −𝐾𝐾ℎ 𝑎𝑎 𝑘𝑘 + 𝐾𝐾ℎ =0 𝑎𝑎 𝑘𝑘 ≅ 1，𝑉𝑉 −𝐾𝐾ℎ = 𝑉𝑉∗ 𝐾𝐾ℎ 𝐸𝐸 𝑘𝑘 = ℏ2 2𝑚𝑚 𝑘𝑘2 + � ℎ≠0 𝑉𝑉 𝐾𝐾ℎ 2 ℏ2 2𝑚𝑚 𝑘𝑘2 − 𝑘𝑘 + 𝐾𝐾ℎ 2