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SUMMARY:Unconventional Order in some Framework Materials - Prof. Andrew Go
 odwin\, University of Oxford
DTSTART:20171123T141500Z
DTEND:20171123T151500Z
UID:TALK78291@talks.cam.ac.uk
CONTACT:Bartomeu Monserrat
DESCRIPTION:This talk will explore some of the unusual phase behaviour of 
 framework materials - including hybrid perovskite analogues - driven by or
 dering of molecular degrees of freedom. Two specific examples to be covere
 d are an incommensurate chirality density wave state and a structural anal
 ogue of Lieb's square ice phase. The relevance of direction-dependent inte
 raction models (including a classical Kitaev-like formalism) to the struct
 ural complexity of framework materials will be discussed in general terms\
 , before exploring the connection between strongly-correlated structural d
 isorder in these systems and various cooperative phenomena. The talk will 
 conclude with a study of Prussian Blue analogues\, where strong geometric 
 frustration leads to an unexpectedly complex phase behaviour characterised
  by "hidden" polymorphism.
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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