Shapiro response of superconducting diode effect derived from Andreev molecules
Sadashige Matsuo, Russell S. Deacon, Shohei Kobayashi, Yosuke Sato, Tomohiro Yokoyama, Tyler Lindemann, Sergei Gronin, Geoffrey C. Gardner, Koji Ishibashi, Michael J. Manfra, Seigo Tarucha
DOI 10.1103/PhysRevB.111.094512 · Physical Review B
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Abstract
The superconducting diode effect (SDE) is a phenomenon that has attracted significant attention for its potential to establish new Josephson junction (JJ) physics and its application as a rectifier in Josephson circuits. While many experimental platforms for SDE have been reported, only a few demonstrate high efficiency. One promising system is a JJ coherently coupled with a second JJ embedded in a superconducting loop, where SDE is controllable in direction via the phase difference. Here we study SDE in such devices under microwave irradiation. With the appearance of Shapiro steps, SDE efficiency increases as the microwave power is raised. Additionally, a finite voltage difference appears without any direct bias current at high microwave powers. These results are explained by the dynamics of the JJ's washboard potential, which are common to all SDE systems. Our findings enhance the understanding of SDE dynamics and expand their potential applications.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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