Spin-charge coupling in quantum wires at zero magnetic field

Rodrigo G. Pereira, Eran Sela

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number115324
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number11
StatePublished - 27 Sep 2010
Externally publishedYes


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