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Elemental Chains

机译:元素链

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摘要

Results of first-principle density-functional calculations on isolated, infinite, periodic chains containing only one type of atoms are reported. As examples we consider chains of Se, Al, Ba, Bi, Sb, and Sr. Se represents a material for which chain-like structures are found naturally, whereas Al prefers structures with high coordinations. Moreover, linear chains have been found in high-pressure phases of Ba, Bi, Sb, and Sr. For these, the structure of the linear chains is incommensurate with that of the surrounding host. For Se and Al we compare different structures (helical, linear, zigzag, cis, double zigzag, and tetragonal chains), whereas for the other elements we consider only linear chains. Special emphasis is put on structure, relative stability, and band structures. (C) 2008 Wiley Periodicals, Inc. Int J Quantum Chem 109: 837-848, 2009
机译:报告了仅包含一种类型原子的孤立无穷周期性链的第一性原理密度函数计算的结果。作为示例,我们考虑了Se,Al,Ba,Bi,Sb和Sr的链。Se代表天然存在链状结构的材料,而Al则喜欢具有高配位的结构。此外,在Ba,Bi,Sb和Sr的高压相中发现了线性链。为此,线性链的结构与周围主体的结构不相称。对于硒和铝,我们比较不同的结构(螺旋,线性,锯齿形,顺式,双锯齿形和四方链),而对于其他元素,我们仅考虑线性链。特别强调结构,相对稳定性和能带结构。 (C)2008 Wiley Periodicals,Inc. Int J Quantum Chem 109:837-848,2009

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