2005/03/17 by A. A. Donkov, A. Donkov, Andrey V. Chubukov +1 · 1 citation
Physics and Astronomy · #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.71.224431
published as Phys. Rev. B vol 71, 224431 (2005) · 4 pages, 4 figures, submitted to PRB
arxiv created 2005/03/17 · openalex publication_date 2005/06/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We argue that the Raman intensity in a spin-S two-leg spin ladder has a pseudoresonance peak, whose width is very small at large S. The pseudoresonance originates from the existence of a local minimum in the magnon excitation spectrum, and is located slightly below twice the magnon energy at the minimum. The physics behind the peak is similar to the excitonic scenario for the neutron and Raman resonances in a d-wave superconductor.