local density of states

"Dietmar Graf" <[email protected]>
Newsgroups gmane.comp.science.photonic-bands
Message-ID <[email protected]>
Dear Steven and MPB users,


i want to calculate the local density of states of a 3D fcc-pc therefore i need exact coordinates in real space.

MPB calculation is already done.

Doing "mpb-data -r -n 32 -m 1 epsilon.h5" and opening the converted data into VisIt it looks like the centre of any sphere is not in the centre of the displayed box but i am not sure.

The grid/origin of coordinate system in real space generated by MPB is arbitrary choosen?!

Is it possible to set the point of origin into the centre of a sphere? I don't think so because the crystal structure is generated by these lines:

(set! geometry-lattice (make lattice 
			 (basis-size (sqrt 0.5) (sqrt 0.5) (sqrt 0.5))
			 (basis1 0 1 1)
			 (basis2 1 0 1)
			 (basis3 1 1 0)))

and there is nothing that specifies an origin?


Kind regards,

Sven Zimmermann

University Leipzig
Germany
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