金属氢的基态及超导电性

金属氢的基态及超导电性

李俊杰^1,2, 郑伟涛³, 金曾孙¹, 朱宰万² ; 王翠⁴

1. 吉林大学超硬材料国家重点实验室, 长春 130023; 2. 延边大学理工学院物理系, 延吉 133002; 3. 吉林大学材料科学与工程学院, 长春130023; 4. 青岛化工学院信息与控制工程学院, 青岛 266042

收稿日期:2001-09-12 修回日期:1900-01-01 出版日期:2002-01-26 发布日期:2002-01-26
通讯作者: 李俊杰

Ground State and Superconductivity of Metallic Hydrogen

LI Jun-jie^1,2, ZHENG Wei-tao³, JIN Zeng-sun¹ , ZHU Zai-wan², WANG Cui⁴

1. National Laboratory of Superhard Material, Jilin University, Changchun 130023, P.R.China;2. Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002, P.R.China;3. College of Materials Science and Engineering, Jilin University, Changchun 130023, P.R.China; 4. School of Information and Control Engineering, Qingdao College of Chemical Engineering,Qingdao 266042, P.R.China

Received:2001-09-12 Revised:1900-01-01 Online:2002-01-26 Published:2002-01-26
Contact: LI Jun-jie

摘要/Abstract

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=0.226 324 nm, 强耦合电-声耦合常数λ=1.806, 临界温度Tc=179.126 K.

关键词: 金属氢, 基态, 超导电性

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 Tc is 179.126 K.(using e=AKh-D=m=1 unit)

Key words: metallic hydrogen, ground state, superconductivity

中图分类号:

O414.12

李俊杰, 郑伟涛, 金曾孙, 朱宰万 ; 王翠. 金属氢的基态及超导电性[J]. J4, 2002, 40(01): 84-87.

LI Jun-jie, ZHENG Wei-tao, JIN Zeng-sun , ZHU Zai-wan, WANG Cui. Ground State and Superconductivity of Metallic Hydrogen[J]. J4, 2002, 40(01): 84-87.

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