Magnetic impurity effects in metallic carbon nanotubes: local nonFermi liquid theory
Abstract
Magnetic impurity effects on metallic carbon nanotubes are studied theoretically. The resolvent method for the multichannel Kondo effect is applied to the band structure of the k . p perturbation Hamiltonian in the limit of infinite onsite repulsion at the impurity site. We discuss the local nonFermi liquid behaviour at temperatures below the Kondo temperature T_{K}. The density of states of localized electrons has a singularity at about ω^{1/2}, which gives rise to a pseudogap at the Kondo resonance at low temperatures. The temperature dependence of the electronic resistivity is predicted to be T ^{1/2}, and the imaginary part of the dynamical susceptibilities is dependent on ω^{1/2}. Possible experimental observations are discussed.
 Publication:

New Journal of Physics
 Pub Date:
 May 2000
 DOI:
 10.1088/13672630/2/1/309
 arXiv:
 arXiv:condmat/9908240
 Bibcode:
 2000NJPh....2....9H
 Keywords:

 Condensed Matter  Materials Science;
 Condensed Matter  Soft Condensed Matter;
 Condensed Matter  Strongly Correlated Electrons;
 Physics  Chemical Physics;
 Quantum Physics
 EPrint:
 19 pages