CNAM Colloquium: James Williams, UMD

Department of Physics Calendar
Thu, Feb 15, 2018 2:00 pm - 3:30 pm
Rm 1201, John S. Toll Bldg., Refreshments in room 1117 of the Toll Bldg


Speaker Name: James Williams

Speaker Institution: UMD

Title: Using Josephson Junctions to Probe Quantum Materials

Abstract: In this talk I’ll be presenting some of our group’s recent results on using Josephson junctions (JJs) to look for exotic excitations in quantum materials. Specifically, we will present data on junctions made from Pb_xSn_(1-x)Te -- a topological crystalline insulator -- where deviations from conventional JJs becomes most evident under microwave radiation [1]. Finally, I will report on progress made in dynamically creating JJs in NbSe2.

[1] R. A. Snyder, C. J. Trimble, C. C. Rong, P. A. Folkes, P. J. Taylor, J. R. Williams, "Josephson Junctions with Weak Links of Topological Crystalline Insulators", arXiv:1710.06077 (2017).