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arXiv · 0812.1851

Transverse field-induced effects in carbon nanotubes

Wade DeGottardi·Tzu-Chieh Wei·Smitha Vishveshwara
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Abstract

We investigate the properties of conduction electrons in single-walled armchair carbon nanotubes (SWNT) in the presence of both transverse electric and magnetic fields. We find that these fields provide a controlled means of tuning low-energy band structure properties such as inducing gaps in the spectrum, breaking various symmetries and altering the Fermi velocities. We show that the fields can strongly affect electron-electron interaction, yielding tunable Luttinger liquid physics, the possibility of spin-charge-band separation, and a competition between spin-density-wave and charge-density-wave order. For short tubes, the fields can alter boundary conditions and associated single-particle level spacings as well as quantum dot behavior.

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Wade DeGottardi, Tzu-Chieh Wei, Smitha Vishveshwara. 2008-12-10. Transverse field-induced effects in carbon nanotubes. https://doi.org/10.1103/physrevb.79.205421

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