The origin of exciton mass in a frustrated Mott insulator Na${}_2$IrO${}_3$

Zhanybek Alpichshev, Edbert J. Sie, Fahad Mahmood +2

We use a three-pulse ultrafast optical spectroscopy to study the relaxation processes in a frustrated Mott insulator Na${}_2$IrO${}_3$. By being able to independently produce the out-o…