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Condensed Astatine: Monatomic and Metallic

机译:浓缩A:单原子和金属

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摘要

The condensed matter properties of the nominal terminating element of the halogen group with atomic number 85, astatine, are as yet unknown. In the intervening more than 70 years since its discovery significant advances have been made in substrate cooling and the other techniques necessary for the production of the element to the point where we might now enquire about the key properties astatine might have if it attained a condensed phase. This subject is addressed here using density functional theory and structural selection methods, with an accounting for relativistic physics that is essential. Condensed astatine is predicted to be quite different in fascinating ways from iodine, being already at 1 atm a metal, and monatomic at that, and possibly a superconductor (as is dense iodine).
机译:原子序数为85的halogen的卤素基团的标称终止元素的缩合物性质尚不清楚。自从发现70素以来的70多年间,在基板冷却和元件生产所需的其他技术方面取得了重大进展,以至于我们现在可以查询a如果达到凝聚相可能具有的关键特性。 。这里使用密度泛函理论和结构选择方法解决这个问题,并解释相对论物理学是必不可少的。简而言之,浓缩a被认为与碘完全不同,碘已经是1 atm的金属,而原子是单原子的,甚至可能是超导体(稠密的碘)。

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