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Pressure-Induced Hydrogen-Dominant Metallic State in Aluminum Hydride
DOI:
10.1103/PhysRevLett.100.045504
PMID:
18352297
Authors:
Monica
Amboage
(Diamond Light Source)
,
Igor
Goncharenko
(Laboratoire Léon Brillouin C.E.A.-C.N.R.S.)
,
M. I.
Eremets
(Max Planck Institute)
,
M.
Hanfland
(ESRF)
,
J. S.
Tse
(Department of Physics and Engineering Physics, University of Saskatchewan)
,
Y.
Yao
(Department of Physics and Engineering Physics, University of Saskatchewan)
,
I. A.
Trojan
(Max Planck Institute)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Physical Review Letters
, VOL 100 (4)
State:
Published (Approved)
Published:
February 2008
Abstract: Two structural transitions in covalent aluminum hydride AlH3 were characterized at high pressure. A metallic phase stable above 100 GPa is found to have a remarkably simple cubic structure with shortest first-neighbor H-H distances ever measured except in H2 molecule. Although the high-pressure phase is predicted to be superconductive, this was not observed experimentally down to 4 K over the pressure range 120-164 GPa. The results indicate that the superconducting behavior may be more complex than anticipated.
Subject Areas:
Physics
Facility: ESRF
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