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Slow dynamics of disordered zigzag chain molecules in layered LiVS2 under electron irradiation

机译:电子照射下层状LIVS2中无序Z字形链分子的缓慢动态

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Electronic instabilities in transition metal compounds often spontaneously form orbital molecules, which consist of orbital-coupled metal ions at low temperature. Recent local structural studies utilizing the pair distribution function revealed that preformed orbital molecules appear disordered even in the high-temperature paramagnetic phase. However, it is unclear whether preformed orbital molecules are dynamic or static. Here, we provide clear experimental evidence of the slow dynamics of disordered orbital molecules realized in the high-temperature paramagnetic phase of LiVS2, which exhibits vanadium trimerization upon cooling below 314 K. Unexpectedly, the preformed orbital molecules appear as a disordered zigzag chain that fluctuate in both time and space under electron irradiation. Our findings should advance studies on soft matter physics realized in an inorganic material due to disordered orbital molecules.
机译:过渡金属化合物中的电子稳定性通常自发地形成轨道分子,其在低温下由轨道偶联的金属离子组成。 利用该对分布函数的最近局部结构研究表明,即使在高温顺磁相中,普遍性的眶分子也会出现无序。 然而,目前尚不清楚预先形成的眶氏分子是动态的还是静态。 在这里,我们提供了明确的实验证据,即在LIVS2的高温调节阶段中实现的无序轨道分子的缓慢动态证据,其在冷却后314K时呈现钒三聚化。预先形成的轨道分子看起来像一个波动的无序锯齿链 在电子照射下的时间和空间。 我们的研究结果应推进由于无序的轨道分子引起的无机材料中实现的软质物理学。

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