Large Magnetic Susceptibility Anisotropy of Metallic Carbon Nanotubes

Abstract

Through magnetic linear dichroism spectroscopy, the magnetic susceptibility anisotropy of metallic single-walled carbon nanotubes has been extracted and found to be 2-4 times greater than values for semiconducting single-walled carbon nanotubes. This large anisotropy is consistent with our calculations and can be understood in terms of large orbital paramagnetism of electrons in metallic nanotubes arising from the Aharonov-Bohm-phase-induced gap opening in a parallel field. We also compare our values with previous work for semiconducting nanotubes, which confirm a break from the prediction that the magnetic susceptibility anisotropy increases linearly with the diameter.

4 pages, 4 figures

References in corpus (1)

• Hofstadter butterflies of carbon nanotubes: Pseudofractality of the magnetoelectronic spectrum

Cited by in corpus (4)

• Fundamental Optical Processes in Armchair Carbon Nanotubes
• Polarization dependence of coherent phonon generation and detection in highly-aligned single-walled carbon nanotubes
• Observation of the intrinsic magnetic susceptibility of highly purified single-wall carbon nanotubes
• Linear Dichroism Conversion in Quasi One-Dimensional Perovskite Chalcogenide