SQUID measurements on multilayer WTe2 show asymmetric interference patterns and a sawtooth current-phase relation at the edge, indicating ballistic supercurrent over 600 nm as evidence for second-order topological insulator character.
L., Chauvin, M., Huard, B., Pothier, H., Es- teve, D., and Urbina, C., Measurement of the Current-Phase Relation of Superconducting Atomic Contacts , Master’s thesis (2007)
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Probing the topological protection of edge states in multilayer tungsten ditelluride with the superconducting proximity effect
SQUID measurements on multilayer WTe2 show asymmetric interference patterns and a sawtooth current-phase relation at the edge, indicating ballistic supercurrent over 600 nm as evidence for second-order topological insulator character.