[Todos] Fwd: Recordatorio CHARLA IFLYSIB: Martes 16/7, 11.00hs - 'Multiple symmetry sustaining phase transitions in spin ice'

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 		ASUNTO:
 		Recordatorio CHARLA IFLYSIB: Martes 16/7, 11.00hs - 'Multiple
symmetry sustaining phase transitions in spin ice'

 		FECHA:
 		2019-07-15 12:40

 		REMITENTE:
 		Charlas Iflysib <charlas.iflysib en gmail.com>

 		DESTINATARIO:
 		Charlas Iflysib <charlas-iflysib en googlegroups.com>,
academic en fcaglp.unlp.edu.ar, fcnym en museo.fcnym.unlp.edu.ar,
info en ciop.unlp.edu.ar, internet en biol.unlp.edu.ar, scyt en frlp.utn.edu.ar,
Asistentes de Secretaria de Fisica <secre2 en fisica.unlp.edu.ar>,
secre en biol.unlp.edu.ar, secre en mate.unlp.edu.ar,
secretaria en inifta.unlp.edu.ar

LOS ESPERAMOS CON CAFÉ 15 MINUTOS ANTES DE LA CHARLA EN EL LOBBY DEL
INSTITUTO.

Charla  IFLYSIB

MARTES 16/7, 11:00HS. 
LUGAR: IFLYSIB (59 #789, LA PLATA) 

TÍTULO: _ __MULTIPLE SYMMETRY SUSTAINING PHASE TRANSITIONS IN SPIN ICE_ 
EXPOSITOR:  _PETER C. W. HOLDSWORTH_
Ecole Normale Superieure de Lyon 

RESUMEN:  
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. 

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