论文标题
合成Pauflerite中的一维磁性，$β$ -VOSO $ _4 $
One-dimensional magnetism in synthetic Pauflerite, $β$-VOSO$_4$
论文作者
论文摘要
我们已经合成了$β$ -VOSO $ _4 $的单晶样品，并充分表征了它们的磁性特性。我们的磁敏感性，高场磁化和粉末非弹性中子散射结果与一维自旋1/2海森贝格链的理论表达式非常吻合，其交换参数为$ 3.83（2）$ MEV。从头算的计算标识了superexchange途径，这表明旋转链不会沿预期的晶体学链$ a方向运行，而是在v $^{4+} $ o $ $ $ _ {6} $ octahedra之间通过$ _ {4} $ tetrahedra沿$ b $ axis链接。我们没有在我们的实验条件下检测到任何相转换为远程磁性，这表明$β$ -VOSO $ _4 $非常接近理想的一维磁系统。
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.
