Orbital motion of metallic carbon nanotubes in an axial magnetic field

Jie Jiang; Jinming Dong; Xing, D.Y.
December 2003
Applied Physics Letters;12/29/2003, Vol. 83 Issue 26, p5515
Academic Journal
It is found that the orbital effect of a single-wall carbon nanotube quantum dot with rather longer length in the axial magnetic field can become the same order as the Zeeman one or even exceed it for the states nearest to the Fermi level. We predict that the spin singlet–triplet transition can be driven almost entirely by the orbital effect in the nanotube quantum dot. Thus, a type of Kondo effect realized by coupling the singlet state to all triplet states may also be observed in the nanotubes. © 2003 American Institute of Physics.


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