2月21日，江苏省青年物理学家论坛邀请南京大学物理学院孙建教授作报告。

报告题目：Unexpected compounds in the interior of giant planets predicted from first-principles calculations

报告时间：2月21日12:00

报告地点：唐仲英楼B501

报告摘要：The interior of planets, with high pressure and high temperature conditions, is a natural laboratory to “synthesize” many unexpected compounds, which are the basis to understand the structure and evolution of planets. In this talk, I will introduce some of our recent progress using crystal structure prediction [1] combined with first-principles calculations, for instance, the predictions of new possible compounds (helium-water, helium-ammonia, helium-methane, helium-silica, silica-water, etc) in the interior of giant planets or exoplanets, and their exotic new states under planetary high-pressure and high-temperature conditions (superionic state, plastic state, and their coexistence) [2-6]. These new compounds and their states may have some important implications for giant planets, including demixing, magnetic field, erosion of the rocky core, etc.

报告人简介：孙建，南京大学物理学院和固体微结构物理国家重点实验室教授，国家杰出青年基金获得者（2021）。研究方向为：高压与计算凝聚态物理、材料设计、行星深部物质等。发展了机器学习和图论辅助的晶体结构预测新方法（MAGUS）；预言了多个新材料，若干被实验证实；预言了若干系统在高温高压下的超离子态、塑晶态和协同扩散态等新奇物态。已发表学术论文100余篇，重要期刊（Nat. Phys./PRL /PRX/PNAS/JACS）论文20篇。曾获2011年中国国家自然科学二等奖（第五完成人）、2013年“国家海外高层次青年人才”、2014年GRC Van Valkenburg奖。担任高压物理专业委员会委员、计算材料学分会委员、高压化学专委会委员、《物理学进展》副主编、MRE、《高压物理学报》编委。