publication . Preprint . Article . 2017

Coulomb drag between helical Luttinger liquids

N. Kainaris; I. V. Gornyi; A. Levchenko; D. G. Polyakov;
Open Access English
  • Published: 30 Jan 2017
Abstract
We theoretically study Coulomb drag between two helical edges with broken spin-rotational symmetry, such as would occur in two capacitively coupled quantum spin Hall insulators. For the helical edges, Coulomb drag is particularly interesting because it specifically probes the inelastic interactions that break the conductance quantization for a single edge. Using the kinetic equation formalism, supplemented by bosonization, we find that the drag resistivity $\rho_D$ exhibits a nonmonotonic dependence on the temperature $T$. In the limit of low $T$, $\rho_D$ vanishes with decreasing $T$ as a power law if intraedge interactions are not too strong. This is in stark ...
Subjects
arXiv: Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
free text keywords: Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons, Spin (physics), Drag, Quantum, Coulomb, Umklapp scattering, Quantum mechanics, Physics, Luttinger liquid, Bosonization, Electron, Condensed matter physics
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publication . Preprint . Article . 2017

Coulomb drag between helical Luttinger liquids

N. Kainaris; I. V. Gornyi; A. Levchenko; D. G. Polyakov;