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SUMMARY:Dipolar-Octupolar Quantum Spin Liquids in Ce-based Pyrochlores
DTSTART;VALUE=DATE-TIME:20220831T094000Z
DTEND;VALUE=DATE-TIME:20220831T102000Z
DTSTAMP;VALUE=DATE-TIME:20220826T121416Z
UID:indico-contribution-3695@indico.stfc.ac.uk
DESCRIPTION:Speakers: Bruce Gaulin (McMaster University)\nIn geometrically
 -frustrated Ce-based pyrochlores\, such as Ce$_2$Zr$_2$O$_7$\, the effecti
 ve S=1/2 of the Ce3+ crystal field ground state doublet is known to act bo
 th as a conventional dipole magnetic moment\, and as an octupole.  This co
 nstrains the form of its near-neighbour Hamiltonian\, and allows for diffe
 rent ordered or quantum disordered ground states in this family of  materi
 als\, where either the dipolar or octupolar nature of the S=1/2 degree of 
 freedom dominates.  I will describe recent experiments [1\,2]\, mostly neu
 tron scattering and heat capacity\, which show how the nature of the Ce3+ 
 ground state doublet can be revealed\, and how a particular form of quantu
 m spin liquid can be identified as the likely ground state in Ce$_2$Zr$_2$
 O$_7$.\n\nhttps://indico.stfc.ac.uk/event/53/contributions/3695/
LOCATION:Science and Technology Campus\, University of Parma
URL:https://indico.stfc.ac.uk/event/53/contributions/3695/
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