论文标题
手性helimagnet $ cr_ {1/3} nbs_ {2} $中的铁磁性的性质
The nature of ferromagnetism in the chiral helimagnet $Cr_{1/3}NbS_{2}$
论文作者
论文摘要
手性helimagnet，$ cr_ {1/3} nbs_ {2} $，托管异国情调的自旋纹理，其对Magneto-Transport属性的影响使此材料成为未来Spin-Spinronic应用程序的理想候选者。迄今为止，据信宏观磁和运输自由度之间的相互作用是由于自旋顺序后载体散射的减少而导致的。在这里，我们通过helimagnetic过渡温度介绍了电子结构测量，$ t_ {c} $，通过显示由强烈杂交的NB-和CR衍生的电子状态组成的费米表面，而光谱的频谱重量降低了FERMI水平的近似，因为温度降低了FERMI水平的较低，因为它降低了。这些发现是基于第一原理，密度功能理论计算的合理化的，该计算揭示了较大的最近邻居交换能量，这表明局部旋转力矩与杂交的NB和造成的静态状态之间的相互作用超出了Ruderman-Kitsel-Katsuy-Kasuya-yosida的扰动相互作用，这表明了机械的交换。
The chiral helimagnet, $Cr_{1/3}NbS_{2}$, hosts exotic spin textures, whose influence on the magneto-transport properties, make this material an ideal candidate for future spintronic applications. To date, the interplay between macroscopic magnetic and transport degrees of freedom is believed to result from a reduction in carrier scattering following spin order. Here, we present electronic structure measurements through the helimagnetic transition temperature, $T_{C}$ that challenges this view by showing a Fermi surface comprised of strongly hybridized Nb- and Cr- derived electronic states, and spectral weight in proximity to the Fermi level to anomalously increases as temperature is lowered below $T_{C}$. These findings are rationalized on the basis of first principle, density functional theory calculations, which reveal a large nearest-neighbor exchange energy, suggesting the interaction between local spin moments and hybridized Nb- and Cr- derived itinerant states to go beyond the perturbative interaction of Ruderman-Kittel-Kasuya-Yosida, suggesting instead a mechanism rooted in a Hund's exchange interaction.
