[nmag-users] Long range exchange coupling (RKKY)

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Mike Jaris

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Mar 4, 2014, 4:30:46 PM3/4/14
to nmag-...@lists.soton.ac.uk
Hi all,

Curious about whether nmag can handle long range exchange between layers, something similar to OOMMF's Oxs_TwoSurfaceExchange which solves the following eq:  Eij = $\displaystyle {\frac{{\sigma\left[1-\textbf{m}_i\cdot\textbf{m}_j\right]
+\sig...
...\left[1-\left(\textbf{m}_i\cdot\textbf{m}_j\right)^2\right]
}}{{\Delta_{ij}}}}$ ( $ \Delta_{{ij}}^{}$ is the discretization cell size in the direction from cell i towards cell j). A similar question was asked in this thread but I was interested to see if any progress has been made in this area. 

Regards,
Mike

Fangohr H.

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Mar 4, 2014, 5:29:50 PM3/4/14
to Mike Jaris, Fangohr H., nmag-...@lists.soton.ac.uk
Hi MIke,

On 4 Mar 2014, at 21:30, Mike Jaris <mja...@soe.ucsc.edu<mailto:mja...@soe.ucsc.edu>> wrote:

Hi all,

Curious about whether nmag can handle long range exchange between layers, something similar to OOMMF's Oxs_TwoSurfaceExchange which solves the following eq: Eij = [$\displaystyle {\frac{{\sigma\left[1-\textbf{m}_i\cdot\textbf{m}_j\right] +\sig... ...\left[1-\left(\textbf{m}_i\cdot\textbf{m}_j\right)^2\right] }}{{\Delta_{ij}}}}$] ( [$ \Delta_{{ij}}^{}$] is the discretization cell size in the direction from cell i towards cell j). A similar question was asked in this thread<https://groups.google.com/forum/#!searchin/nmag-users/exchange/nmag-users/gxX9PUEQdos/wOJtKh7CEXUJ> but I was interested to see if any progress has been made in this area.

No, that’s not available, sorry.

Regards,

Hans



Regards,
Mike


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