First-principles molecular-dynamics simulation of liquid rubidium under high pressures

Physical Review B - Condensed Matter and Materials Physics Volume 55 Issue 9 Page 5708-5711 published_at 1997-05-01
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Title ( eng )
First-principles molecular-dynamics simulation of liquid rubidium under high pressures
Creator
Shimojo Fuyuki
Zempo Yasunari
Watabe Mitsuo
Source Title
Physical Review B - Condensed Matter and Materials Physics
Volume 55
Issue 9
Start Page 5708
End Page 5711
Abstract
The effects of compression on the structural and electronic properties of liquid rubidium are studied along the melting curve by means of a first-principles molecular-dynamics simulation. It is shown that the calculated pair distribution functions g(r) are in good agreement with the experimental results for a wide range of pressures; the liquid rubidium is compressed uniformly at 2.5 GPa, and there exist some deviations from the uniform compression at 6.1 GPa. This structural change to a denser state is related to an electronic s-d transition in the liquid state. It is found that, near the triple point, the electronic density of states consists mostly of the s component and, with increasing pressure, the s component decreases gradually over a wide range of energy, and the d component near the Fermi level increases.
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 1997-05-01
Rights
Copyright (c) 1997 American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.55.5708
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.55.5708