SU(4) Kondo rffect in carbon nanotubes

Manh Soo Choi, Rosa López, Ramón Aguado

Research output: Contribution to journalArticlepeer-review

143 Citations (Scopus)


We investigate theoretically the nonequilibrium transport properties of carbon nanotube quantum dots. Owing to the two-dimensional band structure of graphene, a double orbital degeneracy plays the role of a pseudospin, which is entangled with the spin. Quantum fluctuations between these 4 degrees of freedom result in an SU(4) Kondo effect at low temperatures. This exotic Kondo effect manifests as a four-peak splitting in the nonlinear conductance when an axial magnetic field is applied.

Original languageEnglish
Article number067204
JournalPhysical review letters
Issue number6
Publication statusPublished - 2005 Aug 5

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'SU(4) Kondo rffect in carbon nanotubes'. Together they form a unique fingerprint.

Cite this