One-dimensional hot-electron transport in quantum-well wires of polar semiconductors

The velocity-field characteristics of hot electrons moving one dimensionally in the lowest subband of a polar semiconductor quantum-well wire are obtained on a drifted Maxwellian model and also by the Monte Carlo technique. No negative differential resistance is obtained in contradiction to a previous prediction. The size effects at low temperatures are found to be more significant in the drifted Maxwellian model. Our calculations show that the one-dimensional (1-D) mobility for large transverse widths may be higher than the 3-D mobility.