推 rogerfd:500元耶，樓下快上 01/13 17:43
推 kenny2963:固態沒學到薛丁格的ˊˋ 樓下還是你上好了 01/13 22:17
this problem is for solid satae physics.
i do not understand how to solve :
if you solve this problem, i will reward you 500 ptt dollars.
(question)
Let the wavefunction of a ring to be defined by the periodic boundary
condition: the circumference L = 10 composed of 3 primitive cells, and
suppose the allowed values of G are within [ -2g,2g ] where g stand for
the shortest reciprocal lattice vector. Determine the eigen-value of the
schrodinger equation at all K-value, in which all of Fourier compoment of
potential are zero except UG = Ug = U-g = 2.
(b) Suppose the number of primitive cells to be infinity, please illustrate
the dispersive of electrons' energies of the K-values.
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