2001/12/11 by A. Zheludev, E. Ressouche, I. Tsukada +3 · 3 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.65.174416
6 pages 5 figures
arxiv created 2001/12/11 · openalex publication_date 2002/04/29 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The unusual two-stage spin-flop transition in the quasi-one-dimensional S=1/2 antiferromagnet BaCu2Si2O7 is studied by single-crystal neutron diffraction. The staggered magnetization in the system, aligned along the (0,0,1) direction in zero field, rotates towards the (0,1,0) direction at Hc1\ensuremath≈2 T. A second reorientation occurs at Hc2\ensuremath≈4.8 T, when the staggered magnetization aligns itself along (1,0,0). The relative orientations of adjacent spins remain more or less unchanged in the various spin-flop phases. This behavior is inconsistent with the previously proposed theoretical explanation of the two-stage transition.