- #1
Noki Lee
- 4
- 1
I'm trying to understand the valley degeneracy to calculate the tunneling current.
Here is the equation of tunneling current.$$I_T=q\frac {g_sg_v} {L} \sum_{k} v_g(k)(f_v-f_c)T$$
##g_v## is valley degeneracy. I thought it comes from the symmetry of structures, depending on a certain point in k-space like below
$$I_T=q\frac {g_s} {L} \sum_{k} g_v(k)v_g(k)(f_v-f_c)T$$
How can I count the number of valley degeneracy?
And what I'm misunderstanding?
Here is the equation of tunneling current.$$I_T=q\frac {g_sg_v} {L} \sum_{k} v_g(k)(f_v-f_c)T$$
##g_v## is valley degeneracy. I thought it comes from the symmetry of structures, depending on a certain point in k-space like below
$$I_T=q\frac {g_s} {L} \sum_{k} g_v(k)v_g(k)(f_v-f_c)T$$
How can I count the number of valley degeneracy?
And what I'm misunderstanding?