We have measured magnetotransports for layered semiconductors Bi2-xSnxTe3 and Sb2-xSnxTe3 at low temperature in magnetic fields up to 55 T. Both crystals show clear Hall plateaus near the corresponding resistivity minima. Based on the existing band model, we propose a possible mechanism for Hall oscillation in these three-dimensional systems, in which Sn-originated resonant impurity band or lower valence band plays a crucial role.
- Layered semiconductor
- Quantized Hall effect
- Sn-originated impurity band
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering