On the Phase Transition of α-(ET)2I3
On the Phase Transition of α-(ET)2I3
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关于α-(ET)2I3的相变
DOI：
10.1143/jpsj.64.1877
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发表时间：
1995
影响因子：
1.7
通讯作者：
H. Fukuyama
中科院分区：
文献类型：
--
作者：
H. Kino;H. Fukuyama
本文从理论上研究了α -（ET）_2I_3的金属-绝缘体（MI）相变的性质。在Hartree-Fock近似下，在绝对零度下研究了原位库仑相互作用的影响。当库仑相互作用超过某个临界值时，不同堆叠之间发生电荷转移，反铁磁自旋有序沿沿着一个堆叠一维稳定，从而导致MI转变。我们还认为，这种MI转变将导致自旋Peierls-类扭曲，使基态π。因此，目前的理论结果提供了一个可能的解释标题材料的MI转变的有趣的功能。
The nature of the metal-insulator (MI) transition of α -(ET) 2 I 3 has been studied theoretically. The effect of the on-site Coulomb interaction has been investigated at absolute zero within the Hartree-Fock approximation. If the Coulomb interaction exceeds some critical value, charge transfer occurs between different stacks and antiferromagnetic spin ordering is stabilized one-dimensionally along one stack, which results in the MI transition. It is also argued that this MI transition will lead to spin-Peierls-like distortion making the ground state nonmagnetic. Hence the present theoretical results offer a possible explanation for the intriguing feature of the MI transition of the title material.