报告人：王健

单位：International Center for Quantum Materials, School of Physics, Peking University, Beijing, China, 100871

报告时间：2026年5月11日（星期一）上午10:10

报告地点：知新楼C座702量子报告厅

邀请人：王春明，王磊

个人简介：

北京大学钱塘教授，北京市重点实验室主任。在低维超导和拓扑材料的量子输运领域做出了一系列国际领先的开创性成果，相关成果发表在Nature、Science等国际知名学术期刊上（150篇），其中7篇论文被Nature、Science的视点、新闻与展望以及编辑精选高亮报道。2012年入选科技部首批青年科学家专题项目负责人，同年获基金委首批优秀青年基金支持，2016年入选教育部长江学者特聘教授，2018年入选国家重点研发计划项目负责人，2023-2025年入选中国高被引学者，2025年入选全球前2%顶尖科学家，荣获2015年马丁伍德爵士中国物理科学奖、2019年度教育部高等学校科学研究优秀成果奖青年科学奖、2022年度全球华人物理和天文学会亚洲成就奖、2024年度北京市自然科学一等奖（第一完成人）等，2025年入选美国物理学会士。

报告摘要：

For the first time, we experimentally discovered a new quantum phase transition, i.e. quantum Griffiths singularity, in two-dimensional superconducting thin films, which reveals the prominent influence of disorder and dissipation on quantum phase transitions and expands the universality class of quantum phase transitions. Over the past decade, this discovery has become a universal phenomenon across various two-and three-dimensional superconducting systems, and evolved into a paradigm for studying disorder-induced quantum phase transitions for both conventional and unconventional superconductors.

Reference

1. Ying Xing#, Hui-Min Zhang#, Hai-Long Fu#, Haiwen Liu#, Yi Sun, Jun-Ping Peng, Fa Wang, Xi Lin*, Xu-Cun Ma*, Qi-Kun Xue, Jian Wang*, X. C. Xie. "Quantum Griffiths singularity of superconductor-metal transition in Ga thin films" Science 350, 542 (2015).

2. Yi Liu#, Ziqiao Wang#, Pujia Shan, Yue Tang, Chaofei Liu, Cheng Chen, Ying Xing, Qingyan Wang, Haiwen Liu*, Xi Lin, X. C. Xie and Jian Wang*. "Anomalous quantum Griffiths singularity in ultrathin crystalline lead films" Nature Communications 10, 3633 (2019).

3. Yi Liu#, Shichao Qi#, Jingchao Fang, Jian Sun, Chong Liu, Yanzhao Liu, Junjie Qi, Ying Xing, Haiwen Liu*, Xi Lin, Lili Wang, Qi-Kun Xue, X. C. Xie, and Jian Wang*. "Observation of in-plane quantum Griffiths singularity in two-dimensional crystalline superconductors" Physical Review Letters 127, 137001 (2021).

4. Ziqiao Wang#, Yi Liu#, Chengcheng Ji and Jian Wang*. "Quantum phase transitions in two-dimensional superconductors: a review on recent experimental progress" Reports on Progress in Physics 87, 014502 (2024).

5. Shichao Qi#, Yi Liu#, Ziqiao Wang#, Fucong Chen#, Qian Li, Haoran Ji, Rao Li, Yanan Li, Jingchao Fang, Haiwen Liu*, Fa Wang, Kui Jin*, X. C. Xie and Jian Wang*. "Quantum Griffiths singularity in a three-dimensional superconductor to Anderson critical insulator transition" Physical Review Letters 133, 226001 (2024).