2002
DOI: 10.1016/s0375-9601(01)00803-9
|View full text |Cite
|
Sign up to set email alerts
|

Bosonic behavior of excitons and screening: a consistent calculation

Abstract: Excitons have recently been shown to deviate from pure bosons at densities a hundred times smaller than the Mott density. The corresponding calculations relied on the unscreened excitonic ground state wavefunction. A consistent inclusion of screening, by use of the fundamental eigenfunction of the Hulthén potential, vindicates this approximation.

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

0
3
0

Year Published

2002
2002
2010
2010

Publication Types

Select...
4

Relationship

0
4

Authors

Journals

citations
Cited by 4 publications
(3 citation statements)
references
References 9 publications
0
3
0
Order By: Relevance
“…The effect of interactions, through screening of Coulomb potential by the electron-hole pairs, has been discussed in Refs. [37,43]. These papers demonstrate that the interactions will make fermionic behaviour more pronounced, since presence of other excitons screens the Coulomb interaction which binds electron and hole and leads to the increase of the Bohr radius.…”
Section: Conclusion and Prospectsmentioning
confidence: 95%
“…The effect of interactions, through screening of Coulomb potential by the electron-hole pairs, has been discussed in Refs. [37,43]. These papers demonstrate that the interactions will make fermionic behaviour more pronounced, since presence of other excitons screens the Coulomb interaction which binds electron and hole and leads to the increase of the Bohr radius.…”
Section: Conclusion and Prospectsmentioning
confidence: 95%
“…This expression can be applied directly to electron-hole excitons in semiconductors [1,7,8,9]. Two recent letters [10,11] addressed the question to what extent these excitons can be regarded as bosons. A criterion to assess that, was derived from the expectation values φ (N ) | B † B|φ (N ) and φ (N ) |1 − B, B † |φ (N ) , with B † the one-exciton creation operator and…”
Section: The Maximum Occupation Number For An Exciton Statementioning
confidence: 99%
“…Spin degrees of freedom can be taken into account straightforwardly: for hydrogen and the alkali atoms, where the valence electron has one spin-1/2 degree of freedom, the estimate of Eq. (11) for the MON has to be multiplied by a factor of 2.…”
Section: The Maximum Occupation Number For a Trapped Atommentioning
confidence: 99%