<div dir="ltr"><div><div><div><div><div><div><div>Dear All, <br><br></div>The Eqn. 11 of PRL 89, 157602 (2002) gives : <br><br></div>Square_of_Frequency = (4 x pi x Z* x Z*) / (volume x mu x change_in_epsilon ) <br></div>
= (4 x pi x 1.96 x 1.96 ) / ( 126 x 9.648 x 5.09 ) [values in atomic units]<br></div> = 0.0077974023909789656<br><br></div>Here, I can not obtain the "Square_of_Frequency" for MgO in atomic unit. <br>
</div>Am I missing something here? <br><br></div>Thanks in advance for your time and reply. <br><br><div>Regards, <br></div>Suza W. <br>Magnetism and Magnetic Materials Division<br>
National Laboratory for Material Science<br>
Institute of Metal Research, <span><span>Chinese</span></span> Academy of Sciences.<br><br><div><div><div><div><div><div><div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 10, 2014 at 4:43 PM, Suza W <span dir="ltr"><<a href="mailto:suza.rri@gmail.com" target="_blank">suza.rri@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div><div><div><div>Dear All, <br><br></div>Using Eqn. 11 of PRL 89, 157602 (2002), the authors had got the value 5.09. <br>
</div>Could you anyone please show me how? Feeding volume, mass and frequency in <br>
</div>atomic units, I am unable to get that value if Z* is 1.96. Thanks in advance for your kind kelp. <br><br></div>Regards, <br></div>Suza W. <br>Magnetism and Magnetic Materials Division<br>
National Laboratory for Material Science<br>
Institute of Metal Research, <span><span>Chinese</span></span> Academy of Sciences.</div>
</blockquote></div><br></div></div></div></div></div></div></div></div></div></div></div>