|
| |
FIZIKA A 1 (1992) 2, 123-133
 
ON A SIMPLE ANALYSIS OF THE BURSTEIN-MOSS SHIFT IN QUANTUM CONFINED
STRUCTURES OF TERNARY AND QUATERNARY COMPOUNDS
KHAMAKHYA PRASAD GHATAK
Department of Electronics and Telecommunication Engineering, Faculty of Engineering
and Technology, University of Jadavpur, Calcutta 700032, India
MANABENDRA MONDAL
Department of Physics, Y. S. Palpara College, Post-Palpara, Dist. Midnapore, 721458,
India
Received 17 October 1991
In this paper an attempt is made to study the Burstein-Moss shift in quantum wires and
quantum dots of ternary and quaternary compounds on the basis of three-band Kane model,
taking into account the influence of wraped energy surface of the heavy hole band, It is
found, taking
n-Hg1-xCdxTe and In1-xGaxAsyP1-y
lattice matched to InP as examples, that the Burstein-Moss shift exhibits oscillations of
non-ideal Heaviside step function for quantum wires and quantum dots with respect to
doping and film thickness, respectively. Besides, the three-band Kane model enhances the
Burstein-Moss shift and the numerical values of the shift are greatest in quantum dots for
both compound. In addition, the corresponding results for two-band Kane model and that of
wide band-gap materials have also been obtained as special cases of our generalized
analysis under certain limiting conditions.
UDC 621.315
|
