The electron-hole explicitly correlated Hartree-Fock method (eh-XCHF) is presented as a general strategy for investigation of electron-hole correlation and computation of electron-hole recombination probability. The eh-XCHF method is a variational method which uses explicitly correlated wavefunction that depends on the electron-hole inter-particle distances. It is shown that the explicitly correlated ansatz provides a systematic route to variationally minimize the total energy. The parabolic quantum dot is used as the benchmark system and the eh-XCHF method is used for computation of the ground state energy and electron-hole recombination probability. The results are compared to Hartree-Fock and explicitly correlated full configuration interaction (R12-FCI) calculations. The results indicate that an accurate description of the electron-hole wavefunction at short electron-hole inter-particle distances is crucial for qualitative description of the electron-hole recombination probability. The eh-XCHF method successfully addresses this issue and comparison of eh-XCHF calculations with R12-FCI shows good agreement. The quality of the mean field approximation for electron-hole system is also investigated by comparing HF and R12-FCI energies for electron-electron and electron-hole systems. It was found that performance of the mean field approximation is worse for the electron-hole system as compared to the corresponding electron-electron system.
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28 March 2012
Research Article|
March 27 2012
Calculation of electron-hole recombination probability using explicitly correlated Hartree-Fock method
Jennifer M. Elward;
Jennifer M. Elward
1Department of Chemistry, Center for Science and Technology,
Syracuse University
, Syracuse, New York 13244, USA
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Barbara Thallinger;
Barbara Thallinger
2Department of Chemistry,
Graz University of Technology
, Graz 8010, Austria
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Arindam Chakraborty
Arindam Chakraborty
a)
1Department of Chemistry, Center for Science and Technology,
Syracuse University
, Syracuse, New York 13244, USA
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
J. Chem. Phys. 136, 124105 (2012)
Article history
Received:
August 08 2011
Accepted:
February 26 2012
Citation
Jennifer M. Elward, Barbara Thallinger, Arindam Chakraborty; Calculation of electron-hole recombination probability using explicitly correlated Hartree-Fock method. J. Chem. Phys. 28 March 2012; 136 (12): 124105. https://doi.org/10.1063/1.3693765
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