Visualization and manipulation of four-leaf clover-shaped electronic state in cuprate
Abstract
High-Tc superconductivity in cuprates arises from carrier doping of an antiferromagnetic Mott insulator. Associated with these changes are spectral-weight transfers from the high-energy to low-energy, giving rise to a variety of intriguing electronic phenomena. In this study, for the first time, we discovered a 2a0 sized four-leaf clover-shaped (FLC) electronic state at low-energy, accompanied with the emergence of a characteristic "kink" around 16meV. With increasing doping, the number of FLC pattern decreases and ultimately vanishes in the overdoped region. Remarkably, we achieved real-time electric-field manipulation of this FLC state, through innovative in-situ scanning tunneling microscopy probe. This novel FLC state may not only redefine our understanding of precursor states of pairing, but also reveals its crucial role as a tunable electronic phase in high-Tc superconductors.
Keywords
Cite
@article{arxiv.2506.21392,
title = {Visualization and manipulation of four-leaf clover-shaped electronic state in cuprate},
author = {Zechao Wang and Fengyu Yao and Yuchen Huo and Zhongxu Wei and Zhiyuan Song and Mingqiang Ren and Ziyuan Cheng and Jinfeng Jia and Yu-Jie Sun and Qi-Kun Xue},
journal= {arXiv preprint arXiv:2506.21392},
year = {2025}
}
Comments
12 pages, 4 figres,