Quantum Oscillations in Black Phosphorus Two-dimensional Electron Gas

Black Phosphorus is a layered semiconducting material that can be thinned down to produce atomically thin crystals. These resulting crystals produce a two-dimensional electron gas 2DEG from the resulting quantum confinement of the electrons. Significant differences exist between the physical properties of the atomically thin crystals versus that of the bulk crystals. Zhang and co-workers were able to observe quantum oscillations  in black phosphorus allowing the characteristics of the 2DEG in atomically thin crystals to be elucidated.