Volume 109, Number 3, February 2015
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||19 February 2015|
A new evidence of first-order phase transition for hydrogen at 3000 K
1 Department of Physics, Southwest University - Chongqing 400715, China
2 Institute of High Pressure Physics, Southwest Jiaotong University - Chengdu 610031, China
3 Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics - Mianyang 621900, China
(a) email@example.com (corresponding author)
Received: 26 October 2014
Accepted: 21 January 2015
The molecular-dynamics simulations based on density functional theory have been explored to study the properties of warm dense hydrogen in the density range and temperature between 1000 and 3000 K. We find clear evidence of pressure discontinuity at the isotherm of 3000 K by large-scale simulations, which also confirm the first-order nature of this transition. It indicates that the molecular liquid phase is unexpectedly stable, and the temperature of transition towards an atomic liquid phase is much higher than previously predicted. A new transition line has been located in the phase diagram.
PACS: 64.70.Ja – Liquid-liquid transitions / 64.10.+h – General theory of equations of state and phase equilibria / 71.30.+h – Metal-insulator transitions and other electronic transitions
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.