The Advanced Photon Source
a U.S. Department of Energy Office of Science User Facility

APS High Pressure Special Interest Group

Type Of Event
Sponsoring Division
Professor Shanti Deemyad, University of Utah
Yue Meng (HPCAT) and Vitali Prakapenka (GSECARS)
Start Date
Start Time
1:00 p.m.

Professor Shanti Deemyad of the University of Utah will present “Competitive structural and electronic states under pressure”

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Meeting ID: 928 8703 1962
Passcode: 185233


Application of high pressure has profound effects on both structural and electronic stabilities of a material. In the vicinity of such instabilities, new states of matter often appear which may compete or co-exist. Exploring materials near phase instabilities provides access to rich physics and opportunity to discover exotic new states of matter. I will present some of our recent studies on exploring competitive states of materials at extreme conditions and discuss two distinct examples of our recent studies on pressure-induced structural and electronic transitions in materials: the coexistence of vitreous and crystalline phases of H2O at ambient temperature detected via complementary XRD and Raman studies1 and interplay between the CDW and superconducting states in 2D material BaSbTe2.1S0.9 under pressure.

Shargh, A. K., A. Picard, R. Hrubiak, D. Zhang, R. J. Hemley, S. Deemyad, N. Abdolrahim, and S. Saffarian. "Coexistence of vitreous and crystalline phases of H2O at ambient temperature." Proceedings of the National Academy of Sciences 119, no. 27 (2022)

Shanti’s website:


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