English

Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model

Superconductivity 2026-05-05 v2 Strongly Correlated Electrons

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.

Keywords

Cite

@article{arxiv.2510.17452,
  title  = {Enhanced Superconducting Diode Effect in the Asymmetric Hatsugai-Kohmoto Model},
  author = {Kai Chen and Pavan Hosur},
  journal= {arXiv preprint arXiv:2510.17452},
  year   = {2026}
}