Superconducting diode effect in two-dimensional topological insulator edges and Josephson junctions
ORAL
Abstract
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 letter, we study 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 (√2−1)2≈0.17 for the long Josephson junction.
In this letter, we study 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 (√2−1)2≈0.17 for the long Josephson junction.
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Publication: https://doi.org/10.1063/5.0213137
Presenters
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Tatiana de Picoli Ferreira
Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA, Purdue University
Authors
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Tatiana de Picoli Ferreira
Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA, Purdue University
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Jukka I Vayrynen
Purdue University
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Haixuan Huang
Purdue University