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Two‐Electron Ground State Instabilities in Small Quantum Dots
Author(s) -
Mikhailov I.D.,
Betancur F.J.,
García L.F.
Publication year - 2001
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/(sici)1521-3951(200104)224:3<757::aid-pssb757>3.0.co;2-y
Subject(s) - ground state , radius , quantum dot , electron , physics , chandrasekhar limit , condensed matter physics , spherical shell , atomic physics , instability , shell (structure) , quantum mechanics , materials science , astrophysics , stars , computer security , computer science , white dwarf , composite material
The instability of the ground state electronic structure of two‐electron spherical quantum dot (QD) is analyzed by using a Chandrasekhar‐type trial function with an unknown correlation function and its transition from open‐shell to closed‐shell for small values of QD radius is found. The behavior of the two‐electron ground state energy as a function of the radius of the spherical QD with soft‐edge‐potential for different values of the diffuse layers thickness is described.