M CONSTR: Difference between revisions

Latest revision as of 14:45, 8 April 2022

M_CONSTR = [real array]
Default: M_CONSTR = 3*NIONS*0.0

Description: M_CONSTR specifies the desired local magnetic moment (size and/or direction) for the constrained local moments approach.

The M_CONSTR tag sets the desired size and/or direction of the integrated local magnetic moments in cartesian coordinates.

For each ion 3 coordinates must be specified, i.e., for a system of N ions

M_CONSTR= M_1x M_1y M_1z  M_2x M_2y M_2z  ....  M_Nx M_Ny M_Nz

For I_CONSTRAINED_M=1 the norm of this vector is meaningless since only the direction will be constrained. For I_CONSTRAINED_M=2 both the norm as well as the direction of the moments specified by means of M_CONSTR are subject to constraints.

Setting

M_CONSTR=  ... 0 0 0 ...

for a certain ion is equivalent to imposing no constraints on the integrated local magnetic moment at this ionic site.

For an explanation of the constrained local moments approach see the description of the I_CONSTRAINED_M tag.

@@ Line 15: / Line 15: @@
   {{TAG|M_CONSTR}}=  ... 0 0 0 ...
-for a certain ion is equivalent to imposing no constraint to the integrated local magnetic moment at this ionic site.
+for a certain ion is equivalent to imposing no constraints on the integrated local magnetic moment at this ionic site.
 For an explanation of the constrained local moments approach see the description of the {{TAG|I_CONSTRAINED_M}} tag.
-== Related Tags and Sections ==
+== Related tags and articles ==
 {{TAG|I_CONSTRAINED_M}},
 {{TAG|LAMBDA}},
 {{TAG|RWIGS}},
 {{TAG|LNONCOLLINEAR}}
+{{sc|M_CONSTR|Examples|Examples that use this tag}}
 ----
-[[The_VASP_Manual|Contents]]
-[[Category:INCAR]][[Category:Magnetism]][[Category:Site resolved quantities]]
+[[Category:INCAR tag]][[Category:Magnetism]]