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SUMMARY:Emergent topological phenomena in strained pyrochlore iridate thin
  films - Bohm Jung Yang (Seoul National University)
DTSTART:20200806T100000Z
DTEND:20200806T110000Z
UID:TALK150178@talks.cam.ac.uk
CONTACT:Jan Behrends
DESCRIPTION:Pyrochlore iridate films\, a family of cubic 5d transition met
 al oxides\, can be mother compound\, where various correlated topological 
 phases can be studied by manipulating magnetism with lattice strain. Howev
 er\, in situ epitaxial growth has been known to be notoriously difficult. 
 In this talk\, I am going to talk about the recent progress in the study o
 f pyrochlore iridate thin films focusing on the emergent topological prope
 rties of in-situ grown fully strained Nd2Ir2O7 thin films. A fully straine
 d film with antiferromagnetism shows an anomalous Hall conductivity which 
 is an order of magnitude larger than that in the bulk or the relaxed film.
  Moreover\, the large spontaneous Hall conductivity is observed due to the
  strain-induced magnetic T1-octupole\, which clearly demonstrates that top
 ological properties can be engineered by manipulating magnetism with strai
 n.
LOCATION:Details of video conferencing will be distributed nearer the time
 .
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