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Condensed Matter Seminar: "Josephson Detection of Multiband Effects in Superconductors."

Event Type
Seminar/Symposium
Sponsor
Physics - Condensed Matter
Location
190 ESB
Date
Nov 8, 2019   1:00 pm  
Speaker
Jimmy Williams, University of Maryland
Views
40
Originating Calendar
Physics - Condensed Matter Seminar

The study of unconventional superconducting materials remains an active frontier of condensed matter physics. Exotic superconductivity, such as high T_C, topological, and heavy-fermion superconductors, often rely on phase sensitive measurements to determine the underlying pairing and/or the nature of novel excitations. In this talk I will detail the use of Josephson effect to detect novel properties of two multiband superconducting systems: NbSe_2 [1] and SnTe [2]. Focus will primarily be given modification of conventional Josephson effects due to the loss of time reversal symmetry found to exist in proximity-induced Josephson junction of SnTe nanowires [2]. These works open new routes to exploration of multiband effects in superconductors and have important implications for topological states in superconducting materials. 

 

[1] S. Tran, J. Sell and J. R. Williams, “Dynamical Josephson Effects in NbSe2”, arXiv:1903.00453 (2019).

[2] C. J. Trimble et al., “Josephson Detection of Time Reversal Symmetry Broken Superconductivity in SnTe Nanowires”, arXiv:1907.04199 (2019). 

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