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<td>Recordatorio CHARLA IFLYSIB: Martes 16/7, 11.00hs - 'Multiple symmetry sustaining phase transitions in spin ice'</td>
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<td>2019-07-15 12:40</td>
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<td>Charlas Iflysib <charlas.iflysib@gmail.com></td>
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<th align="right" valign="baseline" nowrap="nowrap">Destinatario:</th>
<td>Charlas Iflysib <charlas-iflysib@googlegroups.com>, academic@fcaglp.unlp.edu.ar, fcnym@museo.fcnym.unlp.edu.ar, info@ciop.unlp.edu.ar, internet@biol.unlp.edu.ar, scyt@frlp.utn.edu.ar, Asistentes de Secretaria de Fisica <secre2@fisica.unlp.edu.ar>, secre@biol.unlp.edu.ar, secre@mate.unlp.edu.ar, secretaria@inifta.unlp.edu.ar</td>
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<div dir="ltr"><strong style="color: #500050;">Los esperamos con café 15 minutos antes de la charla en el lobby del instituto</strong><span style="color: #500050;">.</span><br /><br />
<div style="color: #500050; text-align: center;"><span style="color: #6aa84f;"><strong><span style="font-size: large;">Charla IFLYSIB</span><br /></strong></span></div>
<div style="text-align: center;"><span style="color: #6aa84f;"><strong><span style="font-size: large;">Martes 16/7, 11:00hs.</span></strong></span></div>
<div style="text-align: center;"><strong style="color: #6aa84f;"><span style="font-size: small;">Lugar: IFLySiB (59 #789, La Plata)</span></strong></div>
<div style="text-align: center;"><strong style="color: #6aa84f;"><span style="font-size: small;"> </span></strong></div>
<div style="text-align: center;"><strong style="color: #6aa84f;"><span style="font-size: small;"> </span></strong></div>
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<div><strong>Título: <em> </em></strong><em><strong>Multiple symmetry sustaining phase transitions in spin ice</strong></em></div>
<div><strong>Expositor: <em>Peter C. W. Holdsworth</em></strong><br />Ecole Normale Superieure de Lyon</div>
<div><br /><strong>Resumen: </strong></div>
<div>We present the full phase diagram of the dumbbell model of spin ice as a function of temperature, chemical potential and staggered chemical potential which breaks the point group symmetry of the underlying diamond lattice in favor of a magnetic charge crystal. We observe a double winged structure with five possible phases, monopole fluid (spin ice), fragmented single monopole crystal phases, and double monopole crystal, the zinc-blende structure. Our model provides a skeleton for liquid-liquid phase transitions and for the winged structures observed for itinerant magnets under pressure and external field. We relate our results to recent experiments on Ho2Ir2O7 and propose a wide ranging set of new experiments that exploit the phase diagram, including high-pressure protocols, dynamical scaling of Kibble-Zurek form, and universal violations of the fluctuation-dissipation theorem.</div>
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