Posted by T on February 16, 2014, 2:41 pm
I'm a little bit confused about how things change when you introduce a basis. Consider the case where you have atoms at the lattice points of an FFC lattice so that our primitive lattice vectors are [1/2,0,1/2],[1/2,1/2,0] and [0,1/2,1/2]. Then introduce a basis with new atoms at different points in the unit cell. Would we have to redefine our PLVs? Would the locations of these new atoms be called lattice points? Would a family of lattice planes for the crystal have to pass through these new atoms as well as our original ones? Sorry, I know that this stuff should be pretty obvious. |
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