Modulation of electronic states in semiconducting carbon-nanotubes with external electrodes

Mikio Murata; Mikio Eto

doi:10.1016/S1386-9477(02)00888-3

Modulation of electronic states in semiconducting carbon-nanotubes with external electrodes

Mikio Murata, Mikio Eto

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Electronic states are theoretically studied in carbon-nanotubes with external electrodes. To elucidate effects of the electrodes, we examine roles of external modulating potentials. In metallic nanotubes, the potentials hardly affect the energy levels nor envelope functions of the wavefunctions. In semiconducting nanotubes, however, the external potentials significantly influence the electronic states: With increasing the strength of the potentials, the energy gap decreases to zero, whereas the wavefunctions are more localized.

Original language	English
Pages (from-to)	384-385
Number of pages	2
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	17
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(02)00888-3
Publication status	Published - 2003 Apr 1
Event	Proceedings pf the International Conference on Superlattices - ICSNN 2002 - Touluse, France Duration: 2002 Jul 22 → 2002 Jul 26

Keywords

Carbon-nanotube
Coulomb oscillation
Effective-mass approximation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(02)00888-3

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title = "Modulation of electronic states in semiconducting carbon-nanotubes with external electrodes",

abstract = "Electronic states are theoretically studied in carbon-nanotubes with external electrodes. To elucidate effects of the electrodes, we examine roles of external modulating potentials. In metallic nanotubes, the potentials hardly affect the energy levels nor envelope functions of the wavefunctions. In semiconducting nanotubes, however, the external potentials significantly influence the electronic states: With increasing the strength of the potentials, the energy gap decreases to zero, whereas the wavefunctions are more localized.",

keywords = "Carbon-nanotube, Coulomb oscillation, Effective-mass approximation",

author = "Mikio Murata and Mikio Eto",

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journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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note = "Proceedings pf the International Conference on Superlattices - ICSNN 2002 ; Conference date: 22-07-2002 Through 26-07-2002",

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TY - JOUR

T1 - Modulation of electronic states in semiconducting carbon-nanotubes with external electrodes

AU - Murata, Mikio

AU - Eto, Mikio

PY - 2003/4/1

Y1 - 2003/4/1

N2 - Electronic states are theoretically studied in carbon-nanotubes with external electrodes. To elucidate effects of the electrodes, we examine roles of external modulating potentials. In metallic nanotubes, the potentials hardly affect the energy levels nor envelope functions of the wavefunctions. In semiconducting nanotubes, however, the external potentials significantly influence the electronic states: With increasing the strength of the potentials, the energy gap decreases to zero, whereas the wavefunctions are more localized.

AB - Electronic states are theoretically studied in carbon-nanotubes with external electrodes. To elucidate effects of the electrodes, we examine roles of external modulating potentials. In metallic nanotubes, the potentials hardly affect the energy levels nor envelope functions of the wavefunctions. In semiconducting nanotubes, however, the external potentials significantly influence the electronic states: With increasing the strength of the potentials, the energy gap decreases to zero, whereas the wavefunctions are more localized.

KW - Carbon-nanotube

KW - Coulomb oscillation

KW - Effective-mass approximation

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DO - 10.1016/S1386-9477(02)00888-3

M3 - Conference article

AN - SCOPUS:0037393182

SN - 1386-9477

VL - 17

SP - 384

EP - 385

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-4

T2 - Proceedings pf the International Conference on Superlattices - ICSNN 2002

Y2 - 22 July 2002 through 26 July 2002

ER -

Modulation of electronic states in semiconducting carbon-nanotubes with external electrodes

Abstract

Keywords

ASJC Scopus subject areas

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