論文ID: 2511R001
The superconducting diode effect (SDE), in which a superconducting current flows in one direction and an ohmic current flows in the opposite direction, is expected to be applied to low-power electronic devices. Among the materials exhibiting a remarkable superconducting diode effect are Nb/V/Ta superconducting superlattices. In particular, Fe/Pt-inserted Nb/V/Ta superlattices exhibit a large zero-field SDE, suggesting that the strong spin-orbit coupling of Pt plays a significant role in its emergence. In this study, we investigated the Pt thickness dependence of superconductivity in Fe/Pt-inserted Nb/V/Ta superlattices. We found that the superconducting transition temperature, critical current density, and non-reciprocal critical current density increased with increasing Pt film thickness and saturated at about 3 nm.
