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<p class="MsoNormal"><span style="font-family:"Times New Roman",serif">Please join us for a Special CMT Seminar presented by Premala Chandra, November 14th at 11:30am in 1080 Smith Seminar Room<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif">“Why Study Ferroelectric Quantum Criticality?"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif">Abstract: <span style="color:black;mso-contextual-alternates:yes">
The quest for universality at continuous quantum phase transitions <o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> suggests that quantum criticality should be studied in a variety of settings.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> Displacive quantum paraelectrics have been proposed as simple quantum<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> critical systems, as they have few degrees of freedom, propagating (phonon)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> dynamics and they reside at their marginal dimension where both scaling and<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> generalized Langevin random field theories apply (up to unobservable logarithmic
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> corrections). I will present characterization of temperature-dependent measurable
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> quantities in the vicinity of displacive ferroelectric quantum critical points, indicating<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> good agreement between theory and experiment. I will end with open questions
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> for future research on this area that include unusual forms of superconductivity in<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"> doped quantum paraelectrics.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes">Work done in collaboration with J.C. Lashley, G.G. Lonzarich, C. Morice, S.E. Rowley, S. Saxena and J.F. Scott<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif;color:black;mso-contextual-alternates:yes"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif">Eric<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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