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SUMMARY:Exploring quantum magnetism using molecules\, magnetic fields and 
 pressure. - Paul Goddard\, University of Warwick.
DTSTART:20140611T101500Z
DTEND:20140611T111500Z
UID:TALK52270@talks.cam.ac.uk
CONTACT:Helen Verrechia
DESCRIPTION:Low-dimensional magnets can be constructed from transition-met
 al ions and molecular building blocks to create near ideal realizations of
  model quantum systems. The advantages to this approach include an enhance
 d capability for making adjustments to the crystal structure via chemical 
 and applied pressure\, as well as an ability to set the magnetic energy sc
 ales to levels that can be matched in the laboratory. In this way it is po
 ssible to tune interaction strengths\, adjust anisotropy\, cross phase bou
 ndaries and explore the predictions of quantum theory. Nevertheless\, pert
 urbing these “low-energy” systems still requires the deployment of spe
 cialist experimental techniques that allow magnetic measurements to take p
 lace in ultra-high magnetic fields and pressures in the gigapascal range. 
 Here I will describe these techniques and show how the combination of thes
 e extreme conditions and the versatility of coordination chemistry is used
  to manufacture\, characterise and perturb a variety of S = 1/2 antiferrom
 agnets of different dimensionalities based on molecular-bridged networks o
 f magnetic Cu(II) ions.
LOCATION:Mott Seminar Room (531)\, Cavendish Laboratory\, Department of Ph
 ysics
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