合成Pauflerite（$β$-VOSO$_4$）中的一维磁性
One-dimensional magnetism in synthetic Pauflerite, $β$-VOSO$_4$
AI总结：
本研究合成$β$-VOSO$_4$单晶并表征其磁性，证实其为接近理想的一维自旋1/2海森堡链系统，明确了超交换路径沿$b$轴而非预期的$a$方向。
摘要：
我们合成了$β$-VOSO$_4$单晶样品并全面表征了其磁学性质。我们的磁化率、高场磁化及粉末非弹性中子散射结果与一维自旋1/2海森堡链的理论表达式高度吻合，其交换参数为$3.83(2)$ meV。从头算确定了超交换路径，揭示自旋链并非沿预期的晶体学链$a$方向延伸，而是沿$b$轴通过SO$_4$四面体连接的V$^{4+}$O$_6$八面体之间延伸。在我们的实验条件下未检测到任何长程磁有序相变，表明$β$-VOSO$_4$非常接近理想一维磁性系统。
英文摘要：
We have synthesized single-crystal samples of $β$-VOSO$_4$ and fully characterized their magnetic properties. Our magnetic susceptibility, high field magnetization and powder inelastic neutron scattering results are in excellent agreement with theoretical expressions for a one-dimensional spin-1/2 Heisenberg chain with an exchange parameter of $3.83(2)$ meV. Ab initio calculations identify the superexchange pathway, revealing that the spin-chain does not run along the expected crystallographic chain $a$ direction but instead between V$^{4+}$O$_{6}$ octahedra that are linked via SO$_{4}$ tetrahedra along the $b$ axis. We do not detect any phase transition to a long-range magnetic order within our experimental conditions, indicating $β$-VOSO$_4$ is very close to an ideal one-dimensional magnetic system.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
