BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Natalia Perkins\, University of Minnesota\n\n
\n The search f or experimentally tangible scenarios of spin liquids as topologically orde red quantum states of matter is one of the most vibrant subfields of conte mporary condensed matter research. Honeycomb iridates and related material s have originally been suggested as possible candidates for hosting a spin -liquid state. Intriguingly\, no quantum paramagnetic ground state has bee n discovered so far in these materials\, posing fundamental challenges to determining an accurate underlying microscopic spin model. In our study we  \; show that the second-neighbor Kitaev coupling is an important ingr edient to such a microscopic description for the strong spin-orbit \; transition-metal oxide Na2IrO3.
\n\n We analyze the K1-K2 model from a variety of methodological perspectives. As a coherent picture emerges f rom the investigation\, the K1-K2 model allows us to explain the onset of zigzag magnetic order that is also found experimentally. Furthermore\, we find that the K1-K2 model is a suitable minimal description for resolving the substantially different nature of quantum and thermal fluctuations ori ginating from such Kitaev couplings.
\n DTSTART:20160218T180000Z LOCATION:Physics Building\, Room 313 SUMMARY:Phase Diagram and Quantum Order by Disorder in the Kitaev K1-K2 Hon eycomb Model END:VEVENT END:VCALENDAR