Electron polarization in a quantum well with uniform electric field

2559's picture
Journal Title, Volume, Page: 
Solid State Communications (Impact Factor: 1.7). 06/1991; 78(11).
Year of Publication: 
Khaled Ilawi
Department of Physics,Middle East Technical University , Ankara
Current Affiliation: 
Associate Prof., Department of Physics, An-Najah National University ·
Department of Physics,Middle East Technical University , Ankara
Preferred Abstract (Original): 
The polarization of a quantum electron confined in a one dimensional potential well in the presence of a uniform electric field is calculated numerically. It is shown that the negative polarization reported in the literature for weak fields for all excited subband states is an artifact of using infinite-barrier model. Our numerical work gives results in agreement with previous calculations for the infinite-barrier potential but it yields positive polarization for all values of the applied field for finite-barrier case.
004.jpg824.7 KB