Electron-electron interaction in multiwall carbon nanotubes

Details Electron-electron interaction in multiwall carbon nanotubes Electron-electron interaction in multiwall carbon nanotubes

2001-10-16

arxiv.org/abs/cond-mat/0110313v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 7 figures

Scientific paper

10.1016/S0038-1098(01)00448-3

Magnetic susceptibility $\chi$ of pristine and brominated arc-produced sample of multiwall carbon nanotubes was measured from 4.2 to 400 K. An additional contribution $\Delta \chi(T)$ to diamagnetic susceptibility $\chi(T)$ of carbon nanotubes was found at T $<$ 50 K for both samples. It is shown that $\Delta \chi(T)$ are dominated by quantum correction to $\chi$ for interaction electrons (interaction effects-IE). The IE shows a crossover from two-dimensional to three-dimensional at $B$ = 5.5 T. The effective interaction between electrons for interior layers of nanotubes are repulsion and the electron-electron interaction $\lambda$$_c$ was estimated to be $\lambda_c\sim $ 0.26.

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