Distribution of oscillator strengths and correlated electron dynamics in artificial atoms
Distribution of oscillator strengths and correlated electron dynamics in artificial atoms
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人造原子中振荡器强度的分布和相关电子动力学
DOI:
10.1088/1361-6455/ab9c35
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
T. Sako
中科院分区:
文献类型:
--
作者:
T. Honda;T. Sako
The electronic structure of the quasi-two-dimensional disk-like artificial atom involving holes inside has been studied by the full configuration interaction (FCI) wave function employing mixed basis sets consisting of standard atomic orbitals and anisotropic Gaussian-type functions. The one-particle confinement potential for electrons has been modeled by a sum of an anisotropic harmonic-oscillator potential and attractive Coulomb potentials, the latter being responsible for the hole positive charges. The oscillator strengths from the ground state to a number of low-lying excited states have been calculated by the FCI energies and wave functions for different strength of the harmonic confinement ω. The results for two electrons with a hole at the center, namely, the He-like system, have shown accumulation of the oscillator strengths distributed among different dipole-allowed transitions in the excitation into the center-of-mass modes or the plasmon modes for increasing confinement strength ω. The system of two electrons with two impurity holes, namely, the H 2-like system, has been also studied, which has shown a far more complicated trend of the oscillator strengths with respect to ω owing to the additional degree of freedom of the internuclear distance r. The observed trend has been rationalized on the basis of the nodal patterns in the molecular orbitals and in the electron density distributions.
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DOI:
10.1088/0953-8984/15/32/310
发表时间:
2003
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
T. Sako;G. Diercksen
通讯作者:
G. Diercksen
DOI:
10.1088/0953-4075/36/7/312
发表时间:
2003
期刊:
Journal of Physics B
影响因子:
--
作者:
T. Sako;G. Diercksen
通讯作者:
G. Diercksen
DOI:
10.1088/0953-4075/39/11/006
发表时间:
2006
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
作者:
J. Lo;M. Klobukowski;D. Bielinska;E. W. S. Schreiner;G. Diercksen
通讯作者:
G. Diercksen
DOI:
10.1088/0953-4075/37/5/012
发表时间:
2004
期刊:
Journal of Physics B
影响因子:
--
作者:
T. Sako;I. Černušák;G. Diercksen
通讯作者:
G. Diercksen
DOI:
10.1103/physrevb.43.5151
发表时间:
1991
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Li;Karraï;Yip;Das Sarma S;Drew
通讯作者:
Drew