| DATE: |
2012-01-18 11:00 - 12:00 |
| PLACE: |
Tokai 1 gokan #324-Tsukuba 4 gokan #244 |
| TITLE: |
IMSS seminar |
| CONTACT: |
Hironori Nakao4868 |
| SPEAKER: |
Dr. Duck Young Kim (Geophysical laboratory, Carnegie Institution of Washington) |
| LANGUAGE: |
English |
| ABSTRACT: |
Title: Novel hydrides under pressure
Abstract: Hydrogen, the lightest and simplest element in the Universe, forms
unprecedented hydrides with heavy elements under pressure, which is
interesting in fundamental physics point of view because it can be a proxy
study of metallic solid hydrogen and also in application point of view,
hydrogen-dense materials also can provide alternative route of energy
storage materials. Furthermore, pressure induces dramatic change of hydrides properties such as metal-insulator transition and superconductivity. In this
talk, I present recent studies on various hydrides; La-Hydrides and noble
metal-hydrides, and suggest predicted stoichiometry change of them under
pressure, compared with present experimental evidences. Many of metal
hydride forms fcc type MHn (n=1,2,3) under pressure. I will present
especially the role of octahedrally positioned hydrogen in fcc metal lattice
in MHn for superconductivity. |
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