Spectroscopic characterization of Stone-Wales defects in nanotubes

Yoshiyuki Miyamoto, Angel Rubio, Savas Berber, Mina Yoon, David Tomànek

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

We combined resonant photoabsorption and vibration spectroscopy with scanning tunneling microscopy (STM) to unambiguously identify the presence of Stone-Wales (SW) defects in carbon and boron nitride nanotubes. Based on extensive time-dependent ab initio density functional calculations, we propose to resonantly photoexcite SW defects in the infrared and ultraviolet regime as a means of their identification. Onset of nonradiative decay to a local defect vibration with a frequency of 1962 cm−1 serves as a fingerprint of such defects in carbon nanotubes. The bias dependence of the STM images shows distinct features associated with the presence of SW defects.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number12
DOIs
StatePublished - Mar 25 2004
Externally publishedYes

Fingerprint

Dive into the research topics of 'Spectroscopic characterization of Stone-Wales defects in nanotubes'. Together they form a unique fingerprint.

Cite this