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balabi

木虫 (正式写手)

[求助] 请问pw的K_POINTS中tpiba_c是什么意思

根据input_pw.html的说明,

tpiba_c :
Used for band-structure contour plots.
k-points are in units of  2 pi/a. nks must be 3.
3 k-points k_0, k_1, and k_2 specify a rectangle
in reciprocal space of vertices k_0, k_1, k_2,
k_1 + k_2 - k_0: k_0 + \alpha (k_1-k_0)+
\beta (k_2-k_0) with 0 <\alpha,\beta < 1.
The code produces a uniform mesh n1 x n2
k points in this rectangle. n1 and n2 are
the weights of k_1 and k_2. The weight of k_0
is not used.

实在是不知所云,请教一下,这究竟是取了什么样的k点?
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