Calculation of electron-hole recombination probability using explicitly correlated Hartree-Fock method

Jennifer M. Elward, Barbara Thallinger, Arindam Chakraborty

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Article number124105
JournalThe Journal of Chemical Physics
Volume136
Issue number12
DOIs
StatePublished - Mar 28 2012

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Electrons
Wave functions
electrons
approximation
configuration interaction
energy
quantum dots
routes
Ground state
Semiconductor quantum dots
ground state

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Calculation of electron-hole recombination probability using explicitly correlated Hartree-Fock method. / Elward, Jennifer M.; Thallinger, Barbara; Chakraborty, Arindam.

In: The Journal of Chemical Physics, Vol. 136, No. 12, 124105, 28.03.2012.

Research output: Contribution to journalArticle

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