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SUMMARY:A Brief Introduction to Quasiparticles in Frustrated Magnets - Pro
 f Claudio Castelnovo (Cavendish Laboratory\, University of Cambridge)
DTSTART:20201022T171500Z
DTEND:20201022T183000Z
UID:TALK152029@talks.cam.ac.uk
CONTACT:Miroslava Novoveska
DESCRIPTION:Conventional magnets typically undergo a phase transition as t
 emperature crosses the characteristic interaction energy scale\, separatin
 g a disordered paramagnetic phase from an ordered one. The resulting behav
 iour has been the focus of attention and the setting of countless importan
 t discoveries over the past century in physics. Over the last few decades\
 , an even richer plethora of phenomena has been uncovered in presence of f
 rustration\, when the competition between energy terms suppresses the tran
 sition temperature and opens the door to a new regime: A `spin liquid' whe
 re the magnetic degrees of freedom remain disordered and yet `strongly cor
 related'\, when the temperature becomes substantially smaller than the cha
 racteristic interactions. These new phases of matter can give rise to unus
 ual and interesting phenomena\, encompassing emergent symmetries and topol
 ogical order\, and excitations that can fractionalise the properties of th
 e very constituent elements that make up the system. In this talk we will 
 review some of the basic concepts relating to frustrated magnets and spin 
 liquids. We will focus in particular on how one can model and understand t
 heir elementary excitations\, both at the classical and quantum mechanical
  level.
LOCATION:Online
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