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Investigation of D – centers confined by spherical quantum dots
Author(s) -
Xie Wenfang
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200743116
Subject(s) - quantum dot , hamiltonian (control theory) , radius , center (category theory) , physics , gaussian , effective radius , quantum mechanics , atomic physics , chemistry , mathematics , crystallography , mathematical optimization , computer security , galaxy , computer science
A negative donor center D – in a spherical Gaussian potential quantum dot is studied. The calculations have been performed by means of the exact diagonalization of the Hamiltonian matrix within the effective‐mass approximation. The dot‐radius and confinement‐height dependences of the binding energies of the D – center are obtained. We find that the stability of the D – center strongly depends on the dot radius and the depth of the confining potential. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)