Events at Physics |
Events During the Week of January 5th through January 12th, 2025
Monday, January 6th, 2025
- No events scheduled
Tuesday, January 7th, 2025
- No events scheduled
Wednesday, January 8th, 2025
- Thesis Defense
- Developing Josephson Junction Microwave Spectroscopy as a Modality Compatible with Scanned Probe Microscopy at LHe Temperatures
- Time: 1:00 pm - 3:00 pm
- Place: 5310 Chamberlin
- Speaker: Margaret Fortman, Physics PhD Graduate Student
- Abstract: Developing new diagnostic tools to understand superconducting surface impurities is crucial for the future of quantum superconducting circuity as well as probing new emergent states in condensed matter. Josephson junction spectroscopy (JJS) in a scanned geometry offers a way to probe defects in superconductors directly, while also correlating their electronic and spatial properties. In this work we show advances towards implementing JJS in a scanning tunneling microscope (STM), where the Josephson junction is created between the superconducting tip and superconducting sample. We first present a way to perform this measurement in an STM by creating a new type of tip that leverages the HF filtering properties of a large tip-sample capacitance design. To demonstrate the benefit of this approach, we then show how a large cross junction capacitance improves performance at elevated temperatures using fabricated Nb-based Josephson junction devices. We also discuss the development of iron selenide as a promising superconducting surface on which to implement this technique. Lastly, we present promising results of our high capacitance STM tip showing its ability to decrease thermal noise and P(E)-broadening and discuss future possibilities of this tool.
- Host: Victor Brar
Thursday, January 9th, 2025
- Outreach
- Badgers on Tap
- Time: 7:00 pm
- Place: Working Draft Beer Company, 1133 E Wilson St, Madison, WI 53703
- Speaker: Dan Hooper and Hannah Erpenbeck, WIPAC
- Abstract: Join us for an Astrophysics-themed Badgers on Tap at Working Draft Beer Company on Thursday, January 9, 2025 at 7:00 PM. This event will feature engaging talks from UW-Madison experts, who will share their cutting-edge research on the fascinating world of the Wisconsin IceCube Particle Astrophysics Center.
🎤Dan Hooper: The History of the Universe (in 15 Minutes)!
🎤Hannah Erpenbeck: IceCube: From Cooling Drinks to Detecting Neutrinos
Friday, January 10th, 2025
- Careers for Physicists
- Community College Instructor Pathway Q&A Panel
- Time: 4:00 pm - 5:00 pm
- Place: Zoom
- Speaker: Brent Studer, Scott Hildreth, and James Espinosa
- Abstract: This event, organized for undergraduate astronomy and physics students, aims to provide valuable insights into pursuing careers as community college instructors in STEM fields. The panel was inspired by the tremendous work being done by members of the NASA Community College Network (NCCN), a program that fosters partnerships between community college educators and NASA scientists to broaden access to STEM education.
This session will offer an engaging opportunity for students to hear directly from professionals in the field and understand the impact community college instructors have on STEM education and outreach.
- Host: Melinda Soares-Furtado