High-Temperature Superconductivity in Atomic Metallic Hydrogen

Details High-Temperature Superconductivity in Atomic Metallic Hydrogen High-Temperature Superconductivity in Atomic Metallic Hydrogen

2011-06-27

arxiv.org/abs/1106.5526v1

Physics

Condensed Matter

Superconductivity

19 pages; 9 figures; 4 tables

Scientific paper

Superconductivity in the recently proposed ground-state structures of atomic metallic hydrogen is investigated over the pressure range 500 GPa to 3.5 TPa. Near molecular dissociation, the electron--phonon coupling $\lambda$ and renormalized Coulomb repulsion are similar to the molecular phase. A continuous increase in the critical temperature $T_c$ with pressure is therefore expected, to $\jmmapprox 356$K near 500 GPa. As the atomic phase stabilizes with increasing pressure, $\lambda$ increases, causing $T_c$ to approach $\jmmapprox 481$K near 700 GPa. At the first atomic--atomic structural phase transformation ($\jmmapprox 1$ -- 1.5 TPa), a discontinuous jump in $\lambda$ occurs, causing a significant increase in $T_c$ of up to 764K.

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