Spin dynamics and ordering of a cuprate stripe antiferromagnet

2000/07/07 by G. B. Teitel'baum, G. B. Teǐtel'Baum, I. M. Abu-Shiekah +5 · 4 citations
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.63.020507

4 pages including 3 figures - ref. 16 added

arxiv created 2000/07/07 · openalex publication_date 2000/12/20 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

In La_1.48Nd_0.4Sr_0.12CuO₄ the ¹³⁹La and ⁶³Cu nuclear quadrupole resonance relaxation rates and signal wipe-out upon lowering temperature are shown to be due to purely magnetic fluctuations. They follow the same renormalized classical behavior as seen in neutron data, when the electronic spins order in stripes, with a small spread in spin stiffness (15% spread in activation energy). The La signal, which reappears at low temperatures, is magnetically broadened and experiences additional wipe out due to slowing down of the Nd fluctuations.

Citations

• Spin pseudogap and interplane coupling inY2Ba4Cu7O15: ACu<mml:mprescripts/>63nuclear spin-spin relaxation study

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