Manifestations of electron interactions in photogalvanic effect in chiral nanotubes
arXiv:1112.3154 · doi:10.1103/PhysRevB.85.195430
Abstract
Carbon nanotubes provide one of the most accessible experimental realizations of one dimensional electron systems. In the experimentally relevant regime of low doping the Luttinger liquid formed by electrons may be approximated by a Wigner crystal. The crystal-like electronic order suggests that nanotubes exhibit effects similar to the Mössbauer effect where the momentum of an emitted photon is absorbed by the whole crystal. We show that the circular photovoltaic effect in chiral nanotubes is of the same nature. We obtain the frequency dependence of the photovoltage and characterize its singularities in a broad frequency range where the electron correlations are essential. Our predictions provide a basis for using the photogalvanic effect as a new experimental probe of electron correlations in nanotubes.
5 pages, 3 figures
References in corpus (6)
- Spin dynamics in a one-dimensional ferromagnetic Bose gas
- Phenomenology of One-Dimensional Quantum Liquids Beyond the Low-Energy Limit
- Spectral function of spinless fermions on a one-dimensional lattice
- Edge exponent in the dynamic spin structure factor of the Yang-Gaudin model
- Equilibration of a one-dimensional Wigner crystal
- Intersubband Edge Singularity in Metallic Nanotubes