Open AccessON THE STABILITY OF A WANNIER EXCITON IN A POLAR CRYSTAL
Author(s) -
Gu Shi-Wei,
Xi Liang
Publication year - 1981
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.30.281
Subject(s) - exciton , hamiltonian (control theory) , polar , wannier function , physics , biexciton , ground state , electron , condensed matter physics , free electron model , effective mass (spring–mass system) , atomic physics , quantum mechanics , mathematical optimization , mathematics
In this paper, the ground state energy of a wannier exciton is calculated by means of the effective Hamiltonian obtained by one of the authors. It is shown that there is a range of values of the electron-tohole mass ratio a, for which the exciton. is stable with respect to dissociation into a free electron and a free hole.