Local magnetic properties of the antiferromagnetic metal NaV_2O_4 with frustrated double-chain structure investigated by NMR and magnetization measurements
Local magnetic properties of the antiferromagnetic metal NaV_2O_4 with frustrated double-chain structure investigated by NMR and magnetization measurements
复制标题
通过NMR和磁化测量研究具有受抑双链结构的反铁磁金属NaV_2O_4的局部磁性能
DOI：
10.1103/physrevb.86.174405
复制
发表时间：
2012
影响因子：
3.7
通讯作者：
Hikaru Takeda
中科院分区：
文献类型：
--
作者：
Hikaru Takeda;Hikaru Takeda;Hikaru Takeda
我们对具有阻挫双链结构的反铁磁金属NaVO单晶进行了核磁共振和磁化强度测量，研究了其局域磁性质。在顺磁相，我们发现有一个双交换铁磁相互作用，它与超交换反铁磁相互作用竞争，产生磁阻挫。在磁有序态中，我们提出了一种与螺旋平面不相称的螺旋结构，这种结构是由于磁相互作用之间的竞争而出现的，它是一种自旋结构。因此，我们可以得出结论，与多带效应密切相关的磁阻挫对NaVO的磁性起着至关重要的作用。
We have made NMR and magnetization measurements on a single crystal to investigate local magnetic properties of an antiferromagnet metal NaVOwith a frustrated double-chain structure. In the paramagnetic phase, we find there is a double exchange ferromagnetic interaction, which competes with a superexchange antiferromagnetic interaction, yielding a magnetic frustration. In the magnetically ordered state, we propose an incommensurate helical structure with thehelical plane, which appears due to the competition between the magnetic interactions, as a spin structure. Thus we conclude that the magnetic frustration closely related to a multi-band effect plays an essential role for the magnetic properties of NaVO.