Events at Physics
Events on Friday, October 14th, 2016
- R. G. Herb Condensed Matter Seminar
- Nanostructured topological superconductors
- Time: 10:00 am
- Place: 5310 Chamberlin Hall
- Speaker: Ying Liu , Penn State
- Abstract: I will first present measurements on nanoscale superconductors featuring a doubly connected sample topology, focusing on the observation of the destructive regime - the loss of superconductivity near the half flux quanta in ultrasmall doubly connected superconductors - and the Little-Parks-de Gennes effect. I will discuss fundamental questions raised by by this experiment. I will then present our recent work on Sr2RuO4, a leading candidate for chiral p-wave superconductor featuring non-trivial topological properties, especially our magnetoresistance detection of half-flux-quantum states in this material. Finally, I will briefly mention career opportunities at Shanghai Jiao Tong University.
- Host: Mark Friesen
- Physics Department Colloquium
- New Possibilities for Ultra-high Field Superconducting Magnets
- Time: 3:30 pm
- Place: 2241 Chamberlin hall
- Speaker: David Larbalestier, National High Magnetic Field Laboratory
- Abstract: Two recent NRC reports have described the scientific and technology rationales for many new types of ultra-high field magnet: msec 150 T pulsed, pulsed 40 T for neutron or x-ray scattering, regional 32 T superconducting (SC), 40 T SC, 28 – 37 T high-resolution NMR, 25 – 40 T SC for x-rays and neutrons, 60 T DC, 20 T for human MRI, as well as magnets for fusion, particle-accelerators, radiotherapy, axion and other particle detectors. The materials and magnet technology have now made sufficient progress that a few of these magnets are now feasible. I will describe this progress and the various pluses and minuses of the three present high-temperature superconductor types and suggest some timelines under which high field coils beyond the capabilities of present-day Nb-Ti and Nb3Sn magnets might start to make it into commercial fabrication. We have shown that High Temperature Cuprate Superconductors can generate fields >40 T, almost twice the Nb-based superconductor limit and in striking distance of the world record 45 T DC field which requires 28 MW of DC power and a large Nb3Sn superconducting outsert magnet.
- Host: Robert Joynt
- Careers for Physicists
- Discussion of Non-Academic Career Paths w/BOV members
- Time: 5:00 pm
- Place: 5280 Chamberlin Hall
- Speaker: Dr. Jennifer Sebby-Strabley and Dr. Olivia Castellini, Honeywell and the Museum of Science & Industry
- Abstract: Informal conversation with Physics Board of Visitors Members Jennifer Sebby-Strabley and Olivia Castellini. Dr. Sebby-Strabely is a Senior Technical Manager for the Advanced Sensing Technologies group at Honeywell and Dr. Castellini is a Senior Exhibit Developer at the Museum of Science and Industry in Chicago.
- Host: Department of Physics