Spin Polarization and Exchange Interaction in a Diluted Magnetic Qunautm Dot

<table>Variation of spin interaction energy with concentration of Mn ions for two different dot sizes of Cd<sub>1−<i>x</i></sub>Mn<i><sub>x</sub></i>Te QD. R* = 60.08 <svg height="20.674999" id="M125" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 12.4 20.674999" width="12.4" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,10.538,11.712)"><path d="M-116 651l-169 -129l-22 20l123 143h2q10 0 34.5 -9t30.5 -15z" id="x301"></path></g><g transform="matrix(.017,-0,0,-.017,.062,20.612)"><path d="M358 762q-41 0 -69.5 29t-28.5 71q0 41 29.5 70t71.5 29q41 0 69 -30q29 -29 29 -70t-29.5 -70t-71.5 -29zM425 862q0 27 -19.5 46t-47.5 19q-26 0 -45 -19.5t-19 -45.5q0 -28 19 -47t45 -19q28 0 47.5 19t19.5 47zM707 19v-19h-255v19q40 0 55 9q14 8 14 24q0 28 -19 70
l-41 94h-262l-46 -114q-9 -22 -9 -42q0 -23 16 -32t54 -9v-19h-199v19q41 4 61 30q17 23 65 137l206 488h20l246 -563q22 -52 39 -70q18 -17 55 -22zM216 257h231l-116 275z" id="xC5"></path></g>
</svg>. The spin interaction energy has been calculated using  (<a href="https://static.hindawi.com/articles/acmp/volume-2009/561201/figures/#Eq11">11</a>) for different concentrations.</table>

Advances in Condensed Matter Physics

fig4

Figure 4

Figure 4: Spin Polarization and Exchange Interaction in a Diluted Magnetic Qunautm Dot 