Reverse spin transition triggered by a structural phase transition
Reverse spin transition triggered by a structural phase transition
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DOI：
10.1002/anie.200500316
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发表时间：
2005-01-01
影响因子：
16.6
通讯作者：
Maeda, Y
中科院分区：
文献类型：
--
作者：
Hayami, S;Shigeyoshi, Y;Maeda, Y
设计可用于信息处理和信息存储的分子是分子材料科学的主要挑战之一。适用于这种应用的分子必须是双稳态的：这是一种允许在一定范围的外部扰动下存在两种不同稳定电子态的特性。表现出这种双稳态的分子种类的典型实例是自旋交叉（SCO）化合物。自从第一个SCO化合物被发现以来，[1]已经报道了各种各样的dn（n= 4-7）过渡金属化合物，它们表现出高自旋（HS）和低自旋（LS）态之间的双稳态。[2-4]自旋跃迁可以由温度、压力或光照的变化引起。[2-9]通常，温度依赖性SCO行为涉及在加热时从LS到HS和在冷却时从HS到LS的可逆自旋转变。虽然SCO跃迁是由于单分子的电子结构，甚至可以在
Designing molecules that could be used for information processing and information storage is one of the main challenges in molecular materials science. Molecules that are suitable for such applications must be bistable: a characteristic that allows the presence of two different stable electronic states over a certain range of external perturbation. Typical examples of molecular species that exhibit such bistability are the spin-crossover (SCO) compounds. Since the discovery of the first SCO compound,[1] a variety of dn (n= 4–7) transition metal compounds exhibiting bistability between the high-spin (HS) and low-spin (LS) states have been reported.[2–4] Spin transition can be induced by variation of temperature, pressure, or illumination.[2–9] In general, temperature-dependent SCO behavior involves reversible spin transition from LS to HS upon heating and from HS to LS upon cooling. Although the SCO transition is due to the electronic structure of the single molecule and can be observed even in