2012/03/06 by T. Lancaster, Tom Lancaster, P. J. Baker +6 · 1 citation
Chemistry · Materials Science · Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Chemistry #Condensed matter physics #Crystallography #Magnetic and transport properties of perovskites and related materials #Mathematics #Muon #Muon spin spectroscopy #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Realization (probability) #Relaxation (psychology) #Spin (aerodynamics) #Statistics #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.85.184404
published as Phys. Rev. B 85, 184404 (2012) · 4 pages, 3 figures
arxiv created 2012/03/06 · openalex publication_date 2012/05/03 · arxiv updated 2014/01/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report the results of muon-spin relaxation measurements on the low-dimensional antiferromagnet Rb4Cu(MoO4)3. No long-range magnetic order is observed down to 50 mK implying a ratio TN/J<0.005 (where J is the principal exchange strength along the spin chains) and an effective ratio of interchain to intrachain exchange of |J_\ensuremath⊥/J|<2\ifmmode×\else\texttimes\fi10^\ensuremath-3, making the material an excellent realization of a one-dimensional quantum Heisenberg antiferromagnet. We probe the persistent spin excitations at low temperatures and find that ballistic spin transport dominates the excitations detected below 0.3 K.