Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

To have your events added or removed from this calendar, please contact OUR at ugresearch@illinois.edu

Condensed Matter Seminar - "Feeling the strain: longitudinal and transverse fields for electric quadrupole order"

Event Type: Seminar/Symposium
Sponsor: Physics - Condensed Matter
Location: ESB 190
Date: Nov 15, 2024 1:00 pm
Speaker: Ian Fisher, Stanford University
Contact: Stephen Bullwinkel
E-Mail: bullwink@illinois.edu
Phone: 217-333-1652
Views: 97
Originating Calendar: Physics - Condensed Matter Seminar; Ferroquadrupole order, in which local atomic sites develop identically-oriented spontaneous electric quadrupole moments, provides a specific realization of electronic nematic order. Materials that harbor quadrupolar order can provide useful insights to open questions about the roles played by nematic fluctuations in a wide range of strongly correlated quantum materials. Here I will describe effects associated with longitudinal and transverse effective fields on the quadrupolar material TmVO4, paying attention to the special roles played by externally-induced strain, as well as hyperfine coupling. I will also emphasize several aspects of technique development, including new methods to probe the elastocaloric effect in the frequency domain and in the time domain. These measurements reveal a giant elastocaloric effect at low temperatures, with interesting technological consequences. Electronic nematic order, it would seem, can be useful as well as interesting.

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