Measuring fractional charge in carbon nanotubes

Cristina Bena, Smitha Vishveshwara, Leon Balents, Matthew P.A. Fisher

Research output: Contribution to journalArticlepeer-review


The Luttinger model of the one-dimensional Fermi gas is the cornerstone of modern understanding of interacting electrons in one dimension. In fact, the enormous class of systems whose universal behavior is adiabatically connected to it are now deemed Luttinger liquids. Recently, it has been shown that metallic single-walled carbon nanotubes are almost perfectly described by the Luttinger Hamiltonian. Indeed, strongly non-Fermi liquid behavior has been observed in a variety of DC transport experiments, in very good agreement with theoretical predictions. Here, we describe how fractional quasiparticle charge, a fundamental property of Luttinger liquids, can be observed in impurity-induced shot noise.

Original languageEnglish (US)
Pages (from-to)429-440
Number of pages12
JournalJournal of Statistical Physics
Issue number3-4
StatePublished - May 2001
Externally publishedYes


  • Carbon nanotubes
  • Charge fractionalization
  • Luttinger liquids
  • Non-equilibrium measurements
  • Shot noise

ASJC Scopus subject areas

  • Mathematical Physics
  • General Physics and Astronomy
  • Statistical and Nonlinear Physics


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