Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model

Kai Chen; Pavan Hosur

doi:10.1103/7fxz-3xss

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arXiv · 2510.17452

Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model

Kai Chen·Pavan Hosur

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Abstract

The superconducting diode effect (SDE), characterized by a nonreciprocal supercurrent, has attracted significant attention in recent years due to its potential applications. However, most studies have focused on weakly correlated models, leaving the impact of strong electron-electron interactions on the SDE largely unexplored. In this work, we bridge this gap by investigating the SDE in asymmetric band metals with Hatsugai-Kohmoto (HK) interaction, which are exactly solvable due to their locality in Bloch momentum space. Through a combination of low-energy analysis and a numerical self-consistent approach, we demonstrate that HK interaction can enhance the SDE's quality factor. Our findings shed light on the role of strong electron-electron correlations in shaping the SDE.

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Kai Chen, Pavan Hosur. 2025-10-20. Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model. https://doi.org/10.1103/7fxz-3xss

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