徐莉梅
Professor

Gender:Female

Alma Mater:Boston University

Education Level:With Certificate of Graduation for Doctorate Study

[MORE] Academic Honor:

2015  Winner of National Science Fund for Distinguished Young Scholars

Honors and Titles:

2026-07-08  国家自然科学一等奖

2026-03-27  Wiley Women in Science Awards (Wiley 女科学家奖,2026)

2025-09-10  中国物理学会谢希德物理奖

2025-02-26  入选科技导报“2024年中国重大科学、技术和工程进展”(利用国产扫描探针显微镜首次“看到”冰表面的原子结构)

2019-12-12  First Prize of Natural Science of Ministry of Education

2019-01-03  2018年中国十大科技进展新闻(首次揭示水合离子微观结构)

2019-01-02  "Reveal the atomic structure and magic effect of hydrated ions" was selected as "Ten Advances in Science in China"

2015-08-04  Awardee of the National Science Fund for Distinguished Young Scholars

2011-08-18  1000 Young Scientist Award (Recruitment Program for Global Experts of China)

2023-07-01  北京大学优秀博士论文指导教师

2025-04-01  北京市优秀博士论文指导教师

2026-07-02  北京大学优秀博士论文指导教师

2026-06-29  北京大学教学优秀奖

2018-07-02  Tang Lixin Award for Teaching

2018-05-12  "Excellent Editor Award", Science China-Physics, Mechanics & Astronomy

MOBILE Version

Home

Current position: Home

Phase transition and critical phenomena in complex substances

点击次数:

Phase transitions are common and important phenomena in nature[1]. For example, phase transitions between gas, liquid, and solid states can be well described by statistical physics, thermodynamics, and condensed matter physics. However, such theories do not apply to complex substances with liquid polymorphisms. Specifically, complex substances[2-4], such as water, silicon, sulfur, phosphorus, gallium, and hydrogen, exhibit anomalous properties in their liquid states. Despite having distinct electronic and molecular structures, these substances display similar anomalous properties in their liquid states, including structural, dynamic, and thermodynamic anomalies[5-7]. According to the liquid-liquid critical point scenario, single-component substances may exhibit a low-density liquid (LDL), a high-density liquid (HDL), and a transition between them (LLPT). The liquid-liquid critical point (LLCP) and the resulting critical fluctuation may be the source of the anomalous properties of complex liquids. The phase transitions in complex substances, such as LLPT, are intriguing and important phenomena. However, verification of the LLCP scenario is challenging because LLCPs are usually buried in the deeply supercooled region where crystallization occurs rapidly and is not easily accessible experimentally. How to trace LLPT and LLCP through easily detectable phase intervals has still been at the forefront of this field.


References:

1. X. Yu, R. Huang, H. Song, L. Xu, et al. "Conformal Boundary Conditions of Symmetry-Enriched Quantum Critical Spin Chains", Phys. Rev. Lett. 129, 210601 (2021)

2. R. Li, G. Sun, L. Xu, et al. "Anomalous properties and the liquid-liquid phase transition in gallium", The Journal of Chemical Physics, 145, 054506 (2016)

3. R. Z. Li, J. Chen, X. Z. Li, E. G. Wang, L. Xu*. “Rationalizing the liquid-liquid phase transition in high pressure hydrogen using the concept of the Widom line”. New Journal of Physics 17, 063023 (2015).

4. Z. Sun, D. Pan, L. Xu*, and E. G. Wang*,  “The role of proton ordering in adsorption preference of polar molecule on ice surface”, Proc. Natl. Acad. Sci. USA 109, 13177-13181 (2012)

5. L. Xu*, P. Kumar, S. V. Buldyrev, S.-H. Chen, P. H. Poole, F. Sciortino and H. E. Stanley. “Relation between the widom line and the strong-fragile dynamic crossover in systems with a liquid-liquid phase transition.”, Proc. Natl. Acad. Sci. USA 102, 16558 (2005)

6. L. Xu*, S. V. Buldyrev, F. W. Starr, F. Mallamace, and H. E. Stanley. “Appearance of a fractional Stokes-Einstein relation in water and a structural interpretation of its onset.”, Nature Physics 5, 565-569 (2009).

7. J. Luo, L. Xu*, E. Lascaris, H. E. Stanley, and S. V. Buldyrev, "Behavior of the Widom Line in Critical Phenomena", Phys. Rev. Lett. 112, 135701 (2014).


Click:

The Last Update Time:..

Peking University Official WebsitePkunews 中文