Kavli Affiliate: Jing Wang
| First 5 Authors: Zhaochen Liu, Linghao Huang, Jing Wang, ,
| Summary:
We investigate the Josephson diode effect (JDE) in topological Josephson
junctions. By both analytic and numerical calculations, we find that while a
Josephson junction in the topological phase may exhibit higher diode efficiency
compared to that in the trivial phase, this behavior is not universal. The
presence of Majorana bound states is not a sufficient condition for a large
diode effect. Furthermore, the diode efficiency undergoes substantial changes
only in specific regions along the topological phase transition boundary, and a
significant diode effect does coincide with the topological phases. Thereby our
paper suggests the utilization of topological superconductivity for enhanced
JDE, and also the Josephson diode effect may serve as an indicator for
topological superconductor phase. These results suggest a nuanced relationship
between the topological aspects of Josephson junctions and Josephson diode
effect.
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