2012/09/07 by Али Реза Ашрафи, Ali Ashrafi, Dmitrii L. Maslov · 37 citations
Physics and Astronomy · #Condensed matter physics #Coupling (piping) #Electron #Fermi Gamma-ray Space Telescope #Fermi gas #Fermi liquid theory #Ferromagnetism #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Spin (aerodynamics) #Spin wave #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.109.227201
published in Physical Review Letters 109(22), 227201 (American Physical Society)
arxiv created 2012/09/07 · openalex publication_date 2012/11/27 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We predict the existence of chiral spin waves-collective modes in a two-dimensional Fermi liquid with the Rashba or Dresselhaus spin-orbit coupling. Starting from the phenomenological Landau theory, we show that the long-wavelength dynamics of magnetization is governed by the Klein-Gordon equations. The standing-wave solutions of these equations describe ''particles" with effective masses, whose magnitudes and signs depend on the strength of the electron-electron interaction. The spectrum of the spin-chiral modes for arbitrary wavelengths is determined from the Dyson equation for the interaction vertex. We propose to observe spin-chiral modes via microwave absorption by standing waves confined by an in-plane profile of the spin-orbit splitting.