Influence of the screening effect on polaron energy in a nanotube
Identifieur interne : 000B19 ( Main/Exploration ); précédent : 000B18; suivant : 000B20Influence of the screening effect on polaron energy in a nanotube
Auteurs : S M Seyid-Rzayeva [Azerbaïdjan, Russie]Source :
- Physica Scripta [ 0031-8949 ] ; 2012.
English descriptors
- Teeft :
- Account screening, Account transitions, Binding energy, Dielectric, Dielectric function, Dielectric permeability, Dimensional quantization, Electronic properties, Fermi, Fermi level, Ground state, Ground state polaron energy, Intraband transitions, Mobile electrons, National academy, Numerical calculations, Perturbation theory, Phys, Polaron, Polaron effects, Polaron energy, Polaron energy decreases, Screening, Screening contribution, Screening effect, Solid curve, Status solidi, Subbands.
Abstract
The influence of the screening effect of the electronphonon interaction on weakly coupling Frhlich polaron energy has been investigated in semiconducting nanotubes (NTs). General analytical expressions for the polaron energy have been obtained in arbitrary values of NT radius, taking into account screening as well as considering transitions between subbands of dimensional quantization. The dependence of the polaron energy for ground and excited states on NT radius has been represented on the basis of our numerical calculations. According to research carried out, it has been established that the screening contribution to polaron energy taking into account the virtual transitions from the ground state to subbands n1, 2, 3, as well as the transitions from the polaron excited state with n1 to subbands n1, 2, 3, is significant for ar0 rp < 1 values, where r0 is the NT radius. For values of the parameter a 1 the screening contribution to polaron energy decreases with increasing NT radius, but the decrease of binding energy of the polaron due to screening is still more than 50.
Url:
DOI: 10.1088/0031-8949/85/03/035707
Affiliations:
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Scr.</title><idno type="ISSN">0031-8949</idno><imprint><publisher>IOP Publishing</publisher><date type="published" when="2012">2012</date><biblScope unit="volume">85</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="1">1</biblScope><biblScope unit="page" to="4">4</biblScope><biblScope unit="production">Printed in the UK & the USA</biblScope></imprint><idno type="ISSN">0031-8949</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-8949</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Account screening</term><term>Account transitions</term><term>Binding energy</term><term>Dielectric</term><term>Dielectric function</term><term>Dielectric permeability</term><term>Dimensional quantization</term><term>Electronic properties</term><term>Fermi</term><term>Fermi level</term><term>Ground state</term><term>Ground state polaron energy</term><term>Intraband transitions</term><term>Mobile electrons</term><term>National academy</term><term>Numerical calculations</term><term>Perturbation theory</term><term>Phys</term><term>Polaron</term><term>Polaron effects</term><term>Polaron energy</term><term>Polaron energy decreases</term><term>Screening</term><term>Screening contribution</term><term>Screening effect</term><term>Solid curve</term><term>Status solidi</term><term>Subbands</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">The influence of the screening effect of the electronphonon interaction on weakly coupling Frhlich polaron energy has been investigated in semiconducting nanotubes (NTs). General analytical expressions for the polaron energy have been obtained in arbitrary values of NT radius, taking into account screening as well as considering transitions between subbands of dimensional quantization. The dependence of the polaron energy for ground and excited states on NT radius has been represented on the basis of our numerical calculations. According to research carried out, it has been established that the screening contribution to polaron energy taking into account the virtual transitions from the ground state to subbands n1, 2, 3, as well as the transitions from the polaron excited state with n1 to subbands n1, 2, 3, is significant for ar0 rp < 1 values, where r0 is the NT radius. For values of the parameter a 1 the screening contribution to polaron energy decreases with increasing NT radius, but the decrease of binding energy of the polaron due to screening is still more than 50.</div></front></TEI><affiliations><list><country><li>Azerbaïdjan</li><li>Russie</li></country></list><tree><country name="Azerbaïdjan"><noRegion><name sortKey="Seyid Rzayeva, S M" sort="Seyid Rzayeva, S M" uniqKey="Seyid Rzayeva S" first="S M" last="Seyid-Rzayeva">S M Seyid-Rzayeva</name></noRegion></country><country name="Russie"><noRegion><name sortKey="Seyid Rzayeva, S M" sort="Seyid Rzayeva, S M" uniqKey="Seyid Rzayeva S" first="S M" last="Seyid-Rzayeva">S M Seyid-Rzayeva</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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