C11m does not exist. It includes a gratuit centering that can be
elliminated by changing the unit cell within the same convention (one unit
cell direction perpendicular to the mirror plane).
But, as said in the previous message, the symmetry of the discussed
structure keeping the original unit
> El 16/5/2016, a las 8:50, saurabh singh escribió:
>
> Thank you so much Peter BLAHA Sir for your valuable suggestion .
> I have another query, In the Bilbao crystallographic server the k-vector
> description is given in the two basis i.e. Primitive basis and Conventional
> basis . In the us
This discussion may be very misleading. The concept of frustation is very
popular, but whatever geometrical frustation may exist in a fcc lattice, the
magnetic structure of NiO is perfectly collinear (see for instance in the
MAGNDATA database of the Bilbao crystallographic server:
http://webbdc
In order to know the symmetry of a structure you do not have to look at the
unit cell, but to the symmetry group of the structure. You can have a triclinic
structure with a cubic unit cell. Just look at the symmetry group that is
indicated in the database, and you will see that its point-group i
Hi,
(GM5+ + GM6+ ) and (GM5- + GM6-) form two different "physically" irreducible
representations of even and odd parity of D3d (as double group). Therefore the
degeneracy of the bands corresponding to these two physically irreps is not
forced by symmetry. Consequently the four-fold degeneracy o
M5- + GM6-) and that the two
> pairs of states have parity 1 and -1 respectively?
>
>
> Best wishes,
> Paul
> On Jun 4, 2014, at 18:08, Juan Manuel Perez Mato wrote:
>
>> Hi,
>>
>> (GM5+ + GM6+ ) and (GM5- + GM6-) form two differen
Please, learn some elementary crystallography in the International year of
crystallography.
regards,
J. Manuel Perez-Mato
Fac. Ciencia y Tecnologia,
Universidad del Pais Vasco, UPV
48080 BILBAO,
Spain
tel. +34 946012473
fax. +34 946013500
***
El
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