Spin-charge coupling in quantum wires at zero magnetic field
Strongly Correlated Electrons
2010-10-06 v3
Abstract
We discuss an approximation for the dynamic charge response of nonlinear spin-1/2 Luttinger liquids in the limit of small momentum. Besides accounting for the broadening of the charge peak due to two-holon excitations, the nonlinearity of the dispersion gives rise to a two-spinon peak, which at zero temperature has an asymmetric line shape. At finite temperature the spin peak is broadened by diffusion. As an application, we discuss the density and temperature dependence of the Coulomb drag resistivity due to long-wavelength scattering between quantum wires.
Cite
@article{arxiv.0911.1391,
title = {Spin-charge coupling in quantum wires at zero magnetic field},
author = {Rodrigo G. Pereira and Eran Sela},
journal= {arXiv preprint arXiv:0911.1391},
year = {2010}
}
Comments
16 pages, 5 figures. This is an extended version of "Coulomb drag from spin-charge coupling at zero magnetic field"