University of Maryland
Topological Effects in Weak Link Josephson Junctions of Topological Crystalline Insulators
Josephson junctions have found use in high-speed electronics and quantum computers. In this talk I will describe the Josephson junction as a detector of exotic states. Focused will be given to junctions fabricated from the topological crystalline insulators, which are used to investigate the novel properties of induced superconductivity in SnTe-based materials. Unexpected properties of the Josephson effect reveal contributions to the supercurrent from the surface state not observed in normal-state transport . In particular, observation of a 0-\phi state in the junction has recently been observed in my group , indicating a temperature-driven topological phase transition . Future work on these junctions and more broadly on measurements of quantum materials will also be discussed.
 R. Snyder, et al., Physical Review Letters 121, 097701 (2018).
 C. Trimble, et al., in preparation (2018).
 Wang et al., Physical Review Letters 119 187003 (2017).