Events at Physics |
Events During the Week of January 18th through January 25th, 2026
Monday, January 19th, 2026
- Academic Calendar
- Martin Luther King Jr. Day
- Abstract: *Note: actual end time may vary.* No classes. University offices are closed.. CONTACT: admin@secfac.wisc.edu
Tuesday, January 20th, 2026
- Academic Calendar
- Spring Semester Instruction Begins
- Abstract: *Note: actual end time may vary.* CONTACT: admin@secfac.wisc.edu
- Council Meeting
- Time: 3:00 pm - 4:00 pm
- Place: 2314 Chamberlin
- Speaker: Kevin Black
- Host: Kevin Black
Wednesday, January 21st, 2026
- Department Meeting
- Time: 12:15 pm - 1:15 pm
- Place: B343 Sterling
- Speaker: Kevin Black, UW - Madison, Department of Physics
- Department Meeting
- Host: Kevin Black
Thursday, January 22nd, 2026
- R. G. Herb Condensed Matter Seminar
- Coulomb Drag Studies of Interacting Luttinger Liquids
- Time: 10:00 am - 6:00 pm
- Place: 5310 Chamberlin Hall, hosted by Tiancheng Song
- Speaker: Mingyang Zheng, University of Florida
- Abstract: One-dimensional (1D) quantum wires provide a powerful platform for exploring strong electron–electron interactions and collective excitations under extreme confinement. Coulomb drag between coupled 1D systems offers a uniquely sensitive probe of Tomonaga–Luttinger liquid (TLL) physics, yet some of the central drag theoretical predictions have remained experimentally untested. In the first part of this talk, I will introduce the Coulomb drag measurement technique and present our earlier results on tunable reciprocal and nonreciprocal Coulomb drag in vertically coupled quantum wires, including drag in the nonlinear regime. These studies establish a flexible platform in which Coulomb drag contributions can be tuned by gate voltage and temperature, and they provide a robust experimental route to extracting TLL interaction parameters in realistic, multichannel quantum wires. In the second part of the talk, I will discuss our most recent work on Coulomb drag in the presence of a perpendicular magnetic field. Using magnetic depopulation, we characterize the gate-dependent electron density in individual 1D wires. We find that the magnetic-field dependence of the drag resistance exhibits clear oscillations that align with the depopulation of 1D subbands. Moreover, the observed downturn in the high-temperature Arrhenius activation behavior and the corresponding upturn in the intermediate-temperature power-law exponent are consistent with Coulomb drag between density-mismatched 1D wires. I will conclude with a brief overview of earlier work from my previous group on electrically controlled spin-polarized light-emitting diodes based on a 2D CrI₃/hBN/WSe₂ heterostructure, highlighting connections to spin-dependent transport and hybrid low-dimensional systems.
Friday, January 23rd, 2026
- Physics Department Colloquium
- Title to be announced
- Time: 3:30 pm - 4:30 pm
- Place: Chamberlin 2241
- Speaker: Chanda Prescod-Weinstein, University of New Hampshire
- Host: Tulika Bose and Matt Herndon
Saturday, January 24th, 2026
- Outreach
- Quantz & Physics Lecture Recital
- Time: 7:30 pm - 6:00 pm
- Place: Collins Hall, Hamel Music Center
- Speaker: Elio König and Verità Baroque, UW–Madison Physics
- Abstract: This interdisciplinary program combines a physics lecture by UW Assistant Professor Dr. Elio J. König with a concert by Verità Baroque, exploring the incommensurability of acoustic waves, Baroque-era tunings, and reflections on quantum mechanical wave theory. Presented in honor of the centenary of Schrödinger’s equation, the evening bridges history, science, and innovation in a unique celebration of art and discovery.
The performance unfolds through Baroque music interwoven with whimsical, cat-themed works dedicated to Schrödinger, ultimately transforming into an immersive electronic experience with sound design by Tim Russell, UW–Madison Music Director from the Department of Dance.
At its center is Johann Joachim Quantz, the renowned flutist and composer at the court of Frederick the Great. His music becomes a meeting ground for past and present, resonating alongside explorations of physics, quantum theory, and electronic sound—a testament to the enduring power of creativity across time and disciplines.
This event is FREE for students. All others can purchase tickets on the event website: - Host: Elio König
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