College of Engineering Seminars & Speakers

View Full Calendar

MOVED TO 11 AM-Institute for Condensed Matter Physics Seminar: Unveiling Quasiparticle Berry Curvature Effects in the Spectroscopic Properties of a Topological Superconductor

Event Type
Seminar/Symposium
Sponsor
Physics Department
Location
ESB 190
Date
Oct 30, 2023   11:00 am  
Speaker
Yi-Ting Hsu, University of Notre Dame
Contact
Ljubica Milutinovic
E-Mail
ljubicam@illinois.edu
Phone
217-300-6393
Views
64
Originating Calendar
Physics - Institute for Condensed Matter Theory Seminar

The focus of experimental efforts on topological superconductivity (Tsc) has predominantly centered around the detection of Majorana boundary modes. On the contrary, the experimental features arising from the band topology in the bulk remain relatively unexplored. In this talk, I will discuss how spectroscopic properties away from the boundaries can be influenced by the Berry curvatures (BC) of Bogoliubov quasiparticle in a chiral p-wave Tsc achieved by spin-orbit coupling. Beyond the more well-known momentum-space BC effect, I will show that a new phase-space BC term emerges under an applied magnetic field, exclusively when the spin-orbit coupling and superconductivity coexist. Importantly, this novel BC term leads to qualitative modifications in energy- and momentum-resolved tunneling spectroscopy. Such a BC effect can be sizably amplified by the strength of spin-orbit coupling and the applied field, offering a potentially detectable experimental feature in a chiral p-wave Tsc. 

link for robots only