You should draw the real lattice and reciprocal lattice very carefully. Now in
the reciprocal space, the basis of k are not orthogonal, they have 120 degree
angle.
------------------
Sincerely yours,
Xing Sheng
2009-05-24
-------------------------------------------------------------
From:BinShao
Sent:2009-05-24 07:14:33
To:mpb-discuss
Cc:
Subject:[MPB-discuss] k-points of triangular lattice
Hi, mpb users
In the example of bands of the triangular lattice, the k-points are set as
(set! k-points (list (vector3 0 0 0) ; Gamma
(vector3 0 0.5 0) ; M
(vector3 (/ -3) (/ 3) 0) ; K
(vector3 0 0 0))) ; Gamma
(set! k-points (interpolate 4 k-points))
well, I don't understand why the vector of K point is set as (-1/3, 1/3,
0) but not (sqrt(3)/6, 0.5, 0) according to the irreducible Brillouin
zone of a triangular lattice?
best regards!
Bin Shao
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