High electron density 2DEGs at 111 SrTiO$_{3}$/SmTiO$_{3}$ interfaces

(001) SrTiO$_{3}$ quantum wells formed in structures such as RTiO$_{3}$/SrTiO$_{3}$/RTiO$_{3}$ (R $=$ Gd or Sm) exhibit two dimensional electron gases (2DEGs) that exhibit ferromagnetism and non-Fermi-liquid behavior. 2DEGs are also expected for (111) quantum wells, which furthermore form a honeycomb lattice that is susceptible to geometric frustration and nontrivial band structures. In this work, we present the growth of high quality SrTiO$_{3}$ and SmTiO$_{3}$ layers on (111) LSAT substrates using a hybrid molecular beam epitaxy technique. Structural and electrical characterization show atomically sharp (111) interfaces between SrTiO$_{3}$ and SmTiO$_{3}$, and the presence of a high charge carrier density of $\sim$ 3 $\times$ 10$^{14}$ cm$^{-2}$. We will discuss results of magneto-transport studies in highly confined quantum wells that are only a few atomic planes thick and compare them with results from (001) interfaces.