Authors:

Haixuan Huang

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About Paper:

The superconducting diode effect -- the dependence of critical current on its direction -- can arise from the simultaneous breaking of inversion and time-reversal symmetry in a superconductor and has gained interest for its potential applications in superconducting electronics. In this presentation, we discuss the effect in a two- dimensional topological insulator (2D TI) in both a uniform geometry as well as in a long Josephson junction. We show that in the presence of Zeeman fields, a circulating edge current enables a large non-reciprocity of the critical current. We find a maximum diode efficiency 1 for the uniform 2D TI and (\sqrt{2}-1)^2 \approx 0.17 for the long Josephson junction. Keywords: Superconducting Diode Effect; Topological Insulator; Josephson Junction

Source:

Purdue University / 2024

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Co-authors:

Haixuan Huang