氮基氧化铜阳极的非常规磁性
Unconventional Magnetism in a Nitrogen-Based Analogue of Cupric Oxide
摘要：
我们研究了CuNCN的磁性，CuNCN是氧化铜CuO的第一个氮基类似物。我们的μ子自旋弛豫，核磁共振和电子自旋共振研究表明，经典的磁有序是不存在的最低温度。然而，在80 K以下，自旋关联的大幅度增强和意想不到的非均匀磁性已经被观察到。我们把这归因于一个特殊的脆弱性的电子状态对弱扰动，由于几何挫折，选择之间的竞争自旋液体和更传统的冻结状态。
英文摘要：
We have investigated the magnetic properties of CuNCN, the first nitrogen-based analogue of cupric oxide, CuO. Our muon spin relaxation, nuclear magnetic resonance and electron spin resonance studies reveal that classical magnetic ordering is absent down to lowest temperatures. However, large enhancement of spin correlations and unexpected inhomogeneous magnetism have been observed below 80 K. We attribute this to a peculiar fragility of the electronic state against weak perturbations due to geometrical frustration, which selects between competing spin-liquid and more conventional frozen states.
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