2007/01/31 by K. P. Schmidt, Kai Phillip Schmidt, Götz S. Uhrig +1 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.75.224414
published as Phys. Rev. B 75, 224414 (2007) · 5 pages, 7 figures, predictions to inelastic neutron experiments; slightly revised version according to the referees' suggestions, in press
arxiv created 2007/06/05 · openalex publication_date 2007/06/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We explore the properties of magnetic excitations on the trellis lattice which is relevant for the so-called telephone-number compounds A14Cu24O41 with A=(La,Sr,Ca) and the system SrCu2O3. The trellis lattice consists of two-leg ladders which are coupled in a strongly frustrated fashion. We use the effective model obtained for a single two-leg spin ladder to calculate the two-dimensional one-triplon dispersion and the corresponding one-triplon contribution to the dynamical structure factor. Special attention is laid on signatures of the frustrating interladder magnetic exchange. A detailed suggestion is made for an experimental detection of this exchange in inelastic neutron-scattering experiments.