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Host: Prof. Ruidan Zhong
Venue: TDLI Meeting Room N400
Tencent Meeting link: https://meeting.tencent.com/dm/J9ev3p0N2WQ5
Meeting ID: 738235412, no password
Abstract:
As a novel quantum spin state combining long-range order with superfluid properties, the spin supersolid exhibits significant low-energy fluctuations and entropy effects at ultra-low temperatures, making it a promising candidate for solid-state refrigeration in the sub-Kelvin regime. However, this exotic state had previously only been confirmed in quantum magnetic insulators. In this talk, I will introduce our recent discovery of a spin supersolid and a giant magnetocaloric effect in the rare-earth intermetallic compound EuCo₂Al₉ (ECA).
References：
1. M. Shu et al. Nature 651, 61–67 (2026)
2. X.T. Xu et al. CPL 43, 050708 (2026)
3. N. Xi et al. CPL 43, 050717 (2026)
Biography:
Dr. Zhe Qu received his double B.S. degrees in Material Physics and Computer Science and Technology in 2001, and his Ph.D. degree in Condensed Mater Physics in 2006 (supervisor: Prof. Yuheng Zhang), all from University of Science and Technology of China (USTC). After a two-year postdoctoral fellow working at Tulane University (supervisor: Prof. Zhiqiang Mao), he started his independent research career at USTC as an associated professor. At the end of 2009, he moved to Hefei Institutes of Physical Science, Chinese Academy of Sciences and served as an associate professor at High Magnetic Field Laboratory (CHMFL). He was promoted to a full professor in March 2015. He is a member of YIPA-CAS since 2011, and awarded Anhui Distinguished Young Scholars Program in 2024.
Dr. Qu’s research mainly focuses on the development of measurement techniques under high magnetic field, and physics in quantum magnets. With funding supports from NSFC, MOST and CAS, he has published more than 100 peer-reviewed papers including Nature, Nat. Commun., etc.