Register to reply 
What is twocenter approximation? 
Share this thread: 
#1
Apr2513, 05:36 AM

P: 272

Consider a cubic unit cell of a sc simple lattice (having only one atom in each unit cell) with an atom in its center. Does twocenter approximation (in tightbinding method) mean that we have to consider share of its six nearest neighbours' interactions or it means that we must consider interaction between this atom with only one of its nearest neighbours?



Register to reply 
Related Discussions  
Force to hold a cylinder about its axis with Center of Gravity offset from the center  General Physics  2  
Approximation theory problem: show nonexistence of best approximation  Calculus & Beyond Homework  0  
Born oppenheimer approximation vs adiabatic approximation  Quantum Physics  4  
Center of mass and center of gravity different in non uniform gravitation field?expl  General Physics  4  
The center of Mass perfectly match the center of Force>  General Physics  9 