Prof. Dr. Hanyu Liu[College of Physics, Jilin University, China]

Title: Novel hydrogen and helium compunds under pressure

Time: 10:00 - 11:00 AM, Thursday, Jan. 10, 2019

Place: Conference room A516, HPSTAR New Building (Beijing)

Host: Huiyang Gou

Polycom: 02120001

Abstract:

The knowledge of the structures that can exist in compounds containing helium is of interest for understanding the conditions where and if this inert element can form structures where closed shell electrons of helium can participate in bonding that is not describable exclusively by van der Waals interactions alone. In this work, we examine some mixtures of He and H2O, N2 or some minerals at high pressures using a first principles structure searching method (CALYPSO). We find some thermodynamically stable structures under pressure. These mechanically and dynamically stable structures are found at pressures that are now becoming accessible to high pressure technique. The present results offer insights for the understanding of the plausible reaction between helium with minerals in the Earth’s or other exoplanetary interiors.

Biography of the Speaker:

Hanyu Liu,  Professor, College of Physics, Jilin University

Education:

PhD in Condensed matter physics, State Key Laboratory of Superhard Materials

Jilin University, Changchun, Jilin, China      Jun., 2013

B.S in Physics, College of Physics, 

Jilin University, Changchun, Jilin, China      Jun., 2008

Professional Experience

Postdoctoral associate, Carnegie Institution of Washington, US    Jun., 2015-May., 2018

Postdoctoral fellow, University of Saskatchewan, Canada         Jul., 2013-Jul., 2015