Skip to main content
Browse by:

Until further notice, in-person public events have been canceled. Event listings include how to access online content.
Please check before coming to campus.

Condensed Matter Seminar "Using josephson junctions to probe quantum materials"

Event Image
Icon calendar
Thursday, February 22, 2018
Icon time
11:30 am - 12:30 pm
Icon speaker
James R. Williams (University of Maryland, College Park)
Icon series
Condensed Matter Seminar

Josephson junctions are quantum circuit elements commonly associated with use as fundamental units in quantum computation. These junctions may also play a fundamental role in probing complex materials that have eluded characterization by conventional means. 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 and revel interesting signatures of an unconventional surface state. Finally, I will report on progress made in dynamically creating JJs in NbSe2 and the potential revelation of two independent superconducting order parameters present within the material.

Reference: R. A. Snyder, C. J. Trimble, C. C. Rong, P. A. Folkes, P. J. Taylor, J. R. Williams, arXiv:1710.06077 (2017).

Contact: Cristin Paul