Effects of the one-dimensional quantum barriers in pyramidal quantum dots

We investigated theoretically the effects of the one-dimensional barriers on the electronic states in a quantum dot grown on a nonplanar substrate. These peculiar barriers drastically modify the confined carrier wave functions and their energies. Connecting the quantum wire to the pyramidal quantum dot leads to an enhancement in the ground to first excited state separation energy and a simultaneous large reduction of the energy size sensitivity. (C) 2004 American Institute of Physics.


Published in:
Applied Physics Letters, 84, 20, 4086-4088
Year:
2004
ISSN:
0003-6951
Keywords:
Note:
EPFL, Swiss Fed Inst Technol, Sch Basic Sci,Inst Quantum Elect & Photon, Lab Phys Nanostruct, CH-1015 Lausanne, Switzerland. Michelini, F, EPFL, Swiss Fed Inst Technol, Sch Basic Sci,Inst Quantum Elect & Photon, Lab Phys Nanostruct, CH-1015 Lausanne, Switzerland. fabienne.michelini@epfl.ch
ISI Document Delivery No.: 818UK
Times Cited: 1
Cited Reference Count: 14
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