GENERALIZED WIGNER LATTICES IN ONE DIMENSION AND SOME APPLICATIONS TO TETRACYANOQUINODIMETHANE (TCNQ) SALTS
GENERALIZED WIGNER LATTICES IN ONE DIMENSION AND SOME APPLICATIONS TO TETRACYANOQUINODIMETHANE (TCNQ) SALTS
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DOI：
10.1103/physrevb.17.494
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发表时间：
1978-01-01
影响因子：
3.7
通讯作者：
HUBBARD, J
中科院分区：
文献类型：
--
作者：
HUBBARD, J
计算结果表明，四氰基醌二甲烷链中的静电相互作用可能远大于带宽。确定确切的基态时，相互作用占主导地位的方法被描述，电子被发现有一个周期性的安排，可以被视为一个概括的经典维格纳晶格。它示出了如何的光谱可以解释在这样的配置方面，也是这样的安排可能会引起晶格畸变表现为卫星的X射线衍射图案。
Estimates show that both the on-site and the near-neighbor electrostatic interactions in tetracyanoquinodimethane chains may be much greater than the bandwidth. A method of determining the exact ground state when the interactions are dominant is described; the electrons are found to have a periodic arrangement which may be regarded as a generalization of the classical Wigner lattice. It is shown how the optical spectra may be interpreted in terms of such a configuration; also that such arrangements may give rise to lattice distortions manifested as satellites in the x-ray diffraction pattern.