Matias URDAMPILLETA - TEL

tel-00770488, version 1 - 7 Jan 2013
Ch
k = k e + k⊥ e⊥
Ch.( k+ K) = p2π
(m − n)/3 + p
k⊥,p = 2
d
w
Ep(k) = ±2vf
(m − n)/3 + p
d
2
+
2 k
2
k⊥ = 2(m − n)/(3d) = constante k 2 ⊥ + k2 = ±(E(k)/vf) 2
m − n ≡ 0[3]
E(k) = ±vfk k = 0
m − n ≡ ±1[3]
2vf(2/3d) 0.7[eV ]/d[nm]
p > 0
k⊥ = ±2/(3d)