Quantum confinement and coherence in a two-dimensional electron gas in a carbon-face 3C-SiC/6H-SiC polytype heterostructure

摘要

We report the observation of the quantum coherence in a two-dimensional electron gas (2DEG) at a C-face 3C-/6H-SiC polytype heterostructure. Electronic confinement and coherence were observed at 1.5 K and high magnetic fields, indicating the presence and confinement of a 2DEG. The measured mobility of the 2DEG is 2000 cm~2/V s and the electron sheet density is 2.7 × 10~(12)/cm~2.