2007/08/31 by Shimul Akhanjee, Yaroslav Tserkovnyak · 2 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.76.140408
published as Phys. Rev. B 76 (2007) 140408(R) · 5 pages, 1 figure
openalex publication_date 2007/10/31 · arxiv created 2008/10/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We combine the first-quantized path-integral formalism and bosonization to develop a phenomenological theory for spin-charge-coupled dynamics in one-dimensional (1D) ferromagnetic systems with strong interparticle repulsion, at low temperatures. We assume an effective spin-charge separation and retain the standard Luttinger-liquid plasmon branch, which is explicitly coupled to a ferromagnetic spin-wave texture with a quadratic dispersion. The dynamic spin structure severely suppresses the plasmon peak in the single-particle propagator, in both fermionic and bosonic systems. Our analysis provides an effective theory for the new universality class of 1D ferromagnetic systems, capturing both the trapped spin and propagating spin-wave regimes of the long-time behavior.