Thursday Colloquium Reminder- Happening Today

[Scopel, Carly]

From: The Ohio State University Department of Physics <scopel.6 at osu.edu>
Sent: Thursday, February 22, 2024 8:33 AM
To: Scopel, Carly <scopel.6 at osu.edu>
Subject: Thursday Colloquium Reminder- Happening Today

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COLLEGE OF ARTS AND SCIENCES | DEPARTMENT OF PHYSICS

Happening Today-Spring 2024 Colloquium Series

Please join us at 11:00 AM AND 2:30 PM for Colloquium with Professor Jin Hu from the University of Arkansas and Professor Matthew Szydagis from the University at Albany.




Intertwined degrees of freedom in layered materials

Abstract: Exploring innovative materials with exotic properties has become a driving force in advancing condensed matter physics and materials science. Layered materials serve as exceptional platforms hosting a spectrum of exotic quantum phases and phenomena, including superconductors, correlated electrons, topological phases, and non-trivial spin textures. The distinct structural characteristics of layered compounds offer significant tunability through chemical or mechanical means, enabling the manipulation of electronic states and properties. Furthermore, the ability to obtain atomically thin flakes of these materials opens avenues for investigating novel properties in reduced dimensions. This capability also facilitates more intricate material designs, allowing for the achievement of advanced functionalities through the construction of various heterostructures. In this talk, I will provide an overview of our recent work on topological and magnetic materials. By utilizing intertwined lattice, spin, charge, and topology degrees of freedom in these materials, our research explores the engineering of electronic states through lattice and time-reversal symmetry. This manipulation results in a variety of intriguing phenomena, including the emergence of new surface electronic states, potential enhancements in electronic correlations, insulator-to-metal transitions, and more.

Faculty Host: Fengyuan Yang
Location: 1080 Physics Research Building, Smith Seminar Room
Time: 11:00 AM

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Shining High- *and* Low-Energy Light on Dark Matter: A Multi-Pronged Approach

Abstract: The mystery of dark matter is one of the greatest puzzles in modern science. What is 85% of the matter, or 25% of the mass/energy, of the universe made up of? No human knows for certain. Despite mountains of evidence from astrophysics and cosmology, direct laboratory detection eludes physicists. A leading candidate to explain dark matter is the WIMP or Weakly Interacting Massive Particle, a thermal relic left over after the Big Bang. I will be presenting the first search results as well as subsequent analyses from the LZ experiment deployed in South Dakota, one of the flagship US DOE dark matter projects, and currently world leading above 10 GeV in mass-energy in terms of setting limits on the WIMP interaction strength following non-discovery. I will also describe the Noble Element Simulation Technique (NEST) software I created to model signal and background interactions in a detector like LZ. However, dark matter may be lighter than we’ve thought for decades: perhaps 1 GeV in mass or even less. I will thus also present on a different technology unrelated to the liquid xenon used by LZ. The snowball chamber uses the phase transition of supercooled water to detect incoming radiation, and do so on a tabletop, bringing HEP back to its pre-large-accelerator roots. Lastly, tangential accidental discoveries made during the quest for dark matter will be discussed, especially a new type of nuclear reactor inspired by xenon detector calibrations.

Faculty Host: Chris Hill
Location: 1080 Physics Research Building, Smith Seminar Room
Time: 2:30 PM

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Join Us for the Colloquium and Reception
Event details:

  *   Speakers: Professor Jin Hu and Professor Matthew Szydagis
  *   Receptions start at 10:45 AM and 2:15 AM, Physics Research Building Atrium
  *   Colloquium 11:00 AM- 12:00 PM, and 2:30- 3:30 PM, 1080 Physics Research Building
Refreshments will be provided at 10:45 AM and 2:15 PM.

[Photo of exterior of Smith Seminar Room, Physics 1080. (Location of Colloquium and Reception.)]


Read More: Prof. Hu's Colloquium<https://urldefense.com/v3/__https:/osu.us8.list-manage.com/track/click?u=c5c8b9e4c4ea0024e7b8c1d6a&id=de7015ad31&e=8d1098595f__;!!KGKeukY!1lJLp9OTeJhWgNfO9LewwCvN_aS2bAOHpoavB4ItaxbPwYEaiNTwDI2k2-9GOTUUcm02VBPNFR8dchTfMQ$>

Read More: Prof. Szydagis's Colloquium<https://urldefense.com/v3/__https:/osu.us8.list-manage.com/track/click?u=c5c8b9e4c4ea0024e7b8c1d6a&id=2b91111f75&e=8d1098595f__;!!KGKeukY!1lJLp9OTeJhWgNfO9LewwCvN_aS2bAOHpoavB4ItaxbPwYEaiNTwDI2k2-9GOTUUcm02VBPNFR9XqJxsfQ$>
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