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首页> 外文期刊>Chemical Physics Letters >COMPETING SPIN INTERACTIONS AND DEGENERATE FRUSTRATION FOR DISCRETE MOLECULAR SPECIES
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COMPETING SPIN INTERACTIONS AND DEGENERATE FRUSTRATION FOR DISCRETE MOLECULAR SPECIES

机译：离散分子物种的竞争性自旋相互作用和简并断裂

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The concept of spin frustration, introduced by solid state physicists in relation with the spin glass behavior, at the origin was intimately related to the idea of high orbital degeneracy. More recently, the term spin frustration has also been used in molecular magnetism to define isolated systems with mere competing spin interactions. The idea of orbital degeneracy (or quasi-degeneracy) has unfortunately disappeared. The case of discrete molecular species for which competing spin interactions lead to an orbitally degenerate ground state, with at least one magnetic component, seems to us to be specifically important, and we suggest to define such a situation as being degenerate frustrated. When this is so, an instability of the spin populations with respect to a weak structural deformation may be observed. Several typical situations are investigated, and the occurrence of degenerate frustration in isolated open-shell molecules is discussed. [References: 18]
机译：固态物理学家提出的与自旋玻璃行为有关的自旋失意的概念与起源的高轨道简并性密切相关。最近，术语“自旋失意”也已用于分子磁性中，以定义具有竞争性自旋相互作用的孤立系统。不幸的是，轨道退化（或准退化）的观念已经消失了。对于我们来说，竞争性自旋相互作用导致具有至少一个磁性成分的轨道简并基态的离散分子物种的情况似乎特别重要，我们建议将这种情况定义为简并挫败。在这种情况下，可以观察到自旋种群相对于微弱的结构变形的不稳定性。研究了几种典型情况，并讨论了孤立的开壳分子中简并挫折的发生。 [参考：18]

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