On 10/11/2012 04:10 PM, Sakhrawi Taoufek wrote: > i read that the value of starting magnetization is used to brake the > up/dw symmetry in the charge density but when i fix all parameters and > i change the values of starting magnetization the value of total > magnetization and > the magnetic moment of each atom changes. U can't understand the > relation between starting magnetization, total magnetization and the > local magnetic moment > there is any adea?? > thinx
Starting magnetization is about the initial guess of the SCF cycle. Total/local magnetization is about the converged (or willing to converge) spin-dependent charge density. May the difference in the two concepts be not clear to someone, some textbook reading could be recommended. If the system is "easy", the final result should not depend on the initial guess. That is not always the case, unfortunately, as magnetic structures often display several E[\rho] minima so you might need to play a bit with the starting guess to cover all possibilities and find the global minimum. Guido -- Guido Fratesi Dipartimento di Scienza dei Materiali Universita` degli Studi di Milano-Bicocca via Cozzi 53, 20125 Milano, Italy
