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FIZIKA A 13 (2004) 1 , 1-10
 
ELECTRON AND HOLE CONFINEMENT STATES IN QUANTUM DOT DISC
M. H. HEKMAT, A. NAGWA ELMESHAD and S. A. SAFWAN
Theoretical Physics Department, National Research Center, Cairo, Egypt
Received 3 December 2003; revised manuscript received
15 June 2004
Accepted 13 September 2004 Online
23 December 2004
The ground-state energies of an electron and of a hole in a finite-potential quantum
dot disc of GaAs are calculated. Solving the Schrödinger equation for the two particles
separately, we calculated the first two excited states for each one. To study the effect
of the disc dimensionality on the eigen-energies, we considered different discs with
different values of radius (R) and width (L). Discussing the potential effect, we examined
the eigen-value behaviour at different values of the barrier heights. The corresponding
wave functions are obtained.
PACS numbers: 85.30.Vw, 61.72.Ji
UDC 538.915
Keywords: GaAs, quantum dot, electron, hole, first two excited states, barrier heights
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