Devil's staircase of incompressible electron states in a nanotube
arXiv:cond-mat/0412456 · doi:10.1103/PhysRevLett.95.066401
Abstract
It is shown that a periodic potential applied to a nanotube can lock electrons into incompressible states. Depending on whether electrons are weakly or tightly bound to the potential, excitation gaps open up either due to the Bragg diffraction enhanced by the Tomonaga - Luttinger correlations, or via pinning of the Wigner crystal. Incompressible states can be detected in a Thouless pump setup, in which a slowly moving periodic potential induces quantized current, with a possibility to pump on average a fraction of an electron per cycle as a result of interactions.
arXiv comment4 pages, 1 figure, published version
References in corpus (10)
- Size, Shape and Low Energy Electronic Structure of Carbon Nanotubes
- Coulomb Interactions and Mesoscopic Effects in Carbon Nanotubes
- Effective low-energy theory for correlated carbon nanotubes
- Wigner Crystal in One Dimension
- Conductance of a quantum wire in the Wigner crystal regime
- Low Energy Properties of the (n,n) Carbon Nanotubes
- Electronic Properties of Armchair Carbon Nanotubes : Bosonization Approach
- Narrow gap Luttinger liquid in Carbon nanotubes
- Anomalous Conductance Quantization in Carbon Nanotubes
- Quantized Adiabatic Charge Transport in a Carbon Nanotube