Pure carbon nanoscale devices: Nanotube heterojunctions

L. Chico, Vincent H. Crespi, Lorin X. Benedict, Steven G. Louie, Marvin L. Cohen

Research output: Contribution to journalArticlepeer-review

841 Scopus citations


Introduction of pentagon-heptagon pair defects into the hexagonal network of a single carbon nanotube can change the helicity of the tube and alter its electronic structure. Using a tight-binding method to calculate the electronic structure of such systems we show that they behave as nanoscale metal/semiconductor or semiconductor/semiconductor junctions. These junctions could be the building blocks of nanoscale electronic devices made entirely of carbon.

Original languageEnglish (US)
Pages (from-to)971-974
Number of pages4
JournalPhysical review letters
Issue number6
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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