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金属氢的基态及超导电性
Ground State and Superconductivity of Metallic Hydrogen
【摘要】 给出金属氢 3种可能结构 (bcc ,fcc和hcp)的基态能量表达式及力、热物性 ,并讨论金属氢 (fcc结构 )的BCS弱耦合与Eliasherg强耦合超导电性 .计算结果表明 ,根据能量最低原理 ,金属氢基态的fcc结构处于能量上更有利的位置 ,其晶格常数a =0 2 2 632 4nm ,强耦合电 声耦合常数λ =1 80 6,临界温度Tc=1 79 1 2 6K .
【Abstract】 In this paper, the expression of ground state energy in metallic hydrogen system is given, the possible structure of metallic hydrogen as well as the mechanical and the thermal properties of this matter is investigated. The calculation shows metallic hydorgen with an fcc structure is on the favorable energy situation with a lattice constant a= 0 226 324 nm (zero pressure condition). Besides, the weak and strong coupling superconductivities of metallic hydrogen ( fcc structure) are explored, an electron phonon coupling constant λ =1 806 is obtained, and critical temperature T c is 179 126 K.(using e==m=1 unit)
- 【文献出处】 吉林大学学报(理学版) ,Acta Scientiarium Naturalium Universitatis Jilinensis , 编辑部邮箱 ,2002年01期
- 【分类号】O562;O513;O511
- 【被引频次】1
- 【下载频次】256