[Wannier] How to reduce neighbors for Hamiltonian in Wannier basis ? :: HR_PLOT

[nicolas poilvert]

Normally in "cut" mode, the code simply looks at the
distance between two wannier functions |wm> and
|wn> and if their centres are more than "dist_cutoff"
apart, then the matrix element <wm|H|wn> is set to
zero. But there are no routines to update the full
hamiltonian matrix. Worst case scenario you can modify
the code to do just that. But it seems that the simplest
option is to parse the seedname_hr.dat matrix and extract
all the matrix elements corresponding to the proper R
vector.

N.

On Thu, Apr 7, 2011 at 1:25 PM, Martin Gmitra <martin.gmitra at gmail.com>wrote:

> If the code would provide output for the "truncated" Hamiltonian --
> which is internal,
> are the Hamiltonian far-away-elements from the center simply reduced and
> the
> remaining elements near the center untouched ? Or the center-like elements
> are
> changed as well?
>
> Best,
> Martin
>



-- 
POILVERT Nicolas
PhD candidate,
Dpt of Materials Science and Engineering
Massachusetts Institute of Technology
77, Massachusetts avenue
Cambridge, MA 02139
USA
work: (617) 452-4212
nicolas.poilvert at gmail.com
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