Pressure-induced phenomena in single-walled carbon nanotubes probed by infrared spectroscopy

A. Abouelsayed, K. Thirunavukkuarasu, K. Kamarás, F. Hennrich, C. A. Kuntscher

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The electronic properties of films of unoriented single-walled carbon nanotubes were studied by transmission measurements as a function of pressure. The energies of the optical transitions between the Van Hove singularities decrease with increasing pressure, which can be attributed to pressure-induced hybridization and symmetry-breaking effects. We observe an anomaly in the pressure-induced shift of the optical transitions at around 2GPa due to a structural phase transition. The low-energy absorbance monotonically decreases with increasing pressure, suggesting an increasing carrier localization.

Original languageEnglish
Pages (from-to)559-563
Number of pages5
JournalHigh Pressure Research
Volume29
Issue number4
DOIs
Publication statusPublished - Dec 2009

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infrared spectroscopy
carbon nanotubes
optical transition
trucks
broken symmetry
anomalies
energy
shift
electronics

Keywords

  • Infrared spectroscopy
  • Single-walled carbon nanotubes
  • Structural phase transition

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Pressure-induced phenomena in single-walled carbon nanotubes probed by infrared spectroscopy. / Abouelsayed, A.; Thirunavukkuarasu, K.; Kamarás, K.; Hennrich, F.; Kuntscher, C. A.

In: High Pressure Research, Vol. 29, No. 4, 12.2009, p. 559-563.

Research output: Contribution to journalArticle

Abouelsayed, A. ; Thirunavukkuarasu, K. ; Kamarás, K. ; Hennrich, F. ; Kuntscher, C. A. / Pressure-induced phenomena in single-walled carbon nanotubes probed by infrared spectroscopy. In: High Pressure Research. 2009 ; Vol. 29, No. 4. pp. 559-563.
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