University of Minnesota
School of Physics & Astronomy

Condensed Matter Seminar

Thursday, January 22nd 2009
1:25 pm:
Condensed Matter Seminar in 210 Physics
Speaker: Dr. S. Deemyad, Harvard
Subject: The Melt Line of Hydrogen: En-route to Metallic Hydrogen
Dr. Deemyad is a candidate for a CM Experimentalist Asst. Prof. position.

Solid hydrogen is a molecular quantum solid with unusual predicted properties. At very high pressures or densities it is predicted to become a monatomic metal and a possible high Tc superconductor. Atomic metallic hydrogen has never been experimentally observed, while theoretical predictions of the critical pressure for the transition are scattered over a large range. A recently predicted peak in the temperature versus pressure melt line has been considered as a precursor for metallization. We have used an innovative technique to extend the melt line to high temperature and pressures and observed a peak. In this talk I shall review some of the interesting properties of solid hydrogen, and discuss our recent results on its melt line.

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