摘要
By using Heine-Abarencov pseudopotential method with mono-parameter rc,the expressions for ground state energyε(r_(s)),pressure P(r_(s)),and bulk modulus B(r_(s))of metallic hydrogen(fcc,bcc,and hcp structures)are derived.Based on Gibbs free energy function criterion,the calculation shows that cold metallic hydrogen lattice(T=0K)belongs to hcp structure.
基金
Supported by the National Natural Science Foundation of China under Grant No.19664001.
