BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Prof. Haidong Zhou\, University of Tennessee \n\n
\n Due to t
he geometrically frustrated lattice and effective spin-1/2\, the XY pyroch
lores Er2Ti2O7 and Yb2Ti2
O7 exhibit exotic magnetic ground states related to quant
um spin fluctuations. In this talk\, we presented our recent studies on th
e magnetic orderings of new XY pyrochlores Er2Ge2O7 and Yb2Ge2O7. Then we tried to
unify the magnetic orderings of all studied XY pyrochlores Er2
B2O7 and Yb2B2O7 (B
= Sn\, Ti\, and Ge) through the chemical pressure effects based on the th
eoretically proposed phase diagram.