Published July 20, 2011 | Version v1
Journal article Metadata-only

Breakdown of exchange approximation for cross-polarized excitons in carbon nanotubes

Creators

  • 1. Department of Materials Science and Engineering, Iwate University 4-3-5 Ueda, Morioka, Iwate 020-8551 (Japan)
  • 2. Department of Physics, Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan)

Description

Cross-polarized excitons in carbon nanotubes where polarization is perpendicular to the tube axis are calculated in a Tamm-Dancoff-type approximation and the results are compared with those obtained in the self-consistent-field method. For the lowest exciton, the oscillator strength for the optical absorption peak is considerably reduced and the energy is overestimated.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/302/1/012004

Additional details

Identifiers

DOI
10.1088/1742-6596/302/1/012004;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
302
Journal Issue
1
Journal Page Range
[4 p.]
ISSN
1742-6596

Conference

Title
International symposium 'Nanoscience and Quantum Physics 2011'
Acronym
nanoPHYS'11
Dates
26-28 Jan 2011
Place
Tokyo (Japan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43068776
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ABSORPTION; APPROXIMATIONS; BREAKDOWN; CARBON; EXCITONS; NANOTUBES; OSCILLATOR STRENGTHS; POLARIZATION; SELF-CONSISTENT FIELD
Descriptors DEC
CALCULATION METHODS; ELEMENTS; NANOSTRUCTURES; NONMETALS; QUASI PARTICLES; SORPTION