AI Article Synopsis
- Edge states in topological systems are important due to their stability and unique properties, leading to the development of a superconducting-proximitized edge interferometer on the topological insulator TaPdTe.
- This interferometer realizes the Josephson diode effect (JDE), achieving high efficiency (up to 73%) and ultra-low power consumption while operating under small magnetic fields.
- Key features of the JDE include the presence of a second-order harmonic in the current-phase relation and antisymmetric transport, indicating the device's effectiveness for future advancements in superconducting quantum technologies.
Article Abstract
Edge states in topological systems have attracted great interest due to their robustness and linear dispersions. Here a superconducting-proximitized edge interferometer is engineered on a topological insulator TaPdTe with asymmetric edges to realize the interfering Josephson diode effect (JDE), which hosts many advantages, such as the high efficiency as much as 73% at tiny applied magnetic fields with an ultra-low switching power around picowatt. As an important element to induce such JDE, the second-order harmonic in the current-phase relation is also experimentally confirmed by half-integer Shapiro steps. The interfering JDE is also accompanied by the antisymmetric second harmonic transport, which indicates the corresponding asymmetry in the interferometer, as well as the polarity of JDE. This edge interferometer offers an effective method to enhance the performance of JDE, and boosts great potential applications for future superconducting quantum devices.
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Source |
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11489759 | PMC |
| http://dx.doi.org/10.1038/s41467-024-53383-2 | DOI Listing |
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