Topological transition by dielectric control of exciton wavefunction in thin nanotube structure

Masami Kumagai, Toshihide Takagahara, Kousuke Yakubo

Research output: Contribution to journalArticle

Abstract

Dielectric control of the topology of an exciton wavefunction is proposed and investigated theoretically. As we have shown in a previous paper, we can change the topology of an exciton wavefunction in a nanotube structure by controlling the length and radius of the nanotube. This nature yields a new device which utilizes the topology of an exciton wavefunction, however, its control via the structural parameters does not suit it to device applications. We found that the in-situ control can be achieved by changing the ambient dielectric constants of the nanotube structure and we calculated the transition condition of the topology of an exciton wavefunction.

Original languageEnglish
Pages (from-to)663-666
Number of pages4
JournalSolid State Communications
Volume151
Issue number9
DOIs
Publication statusPublished - 2011 May
Externally publishedYes

Fingerprint

Wave functions
Electron transitions
Excitons
Nanotubes
nanotubes
topology
excitons
Topology
Permittivity
permittivity
radii
LDS 751

Keywords

  • C. Nanotube
  • C. Topology
  • D. Exciton

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Topological transition by dielectric control of exciton wavefunction in thin nanotube structure. / Kumagai, Masami; Takagahara, Toshihide; Yakubo, Kousuke.

In: Solid State Communications, Vol. 151, No. 9, 05.2011, p. 663-666.

Research output: Contribution to journalArticle

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