LaNiGa2 is a time-reversal symmetry breaking superconductor with symmetry protected band crossings, making it an ideal platform for investigating the interplay between unconventional superconductivity and electronic structure topology. Here we present a transport study of LaNiGa2 under pressure. The application of pressure to LaNiGa2 induces a significant enhancement of the superconducting transition temperature Tc at a pressure of 7 GPa. In contrast, powder X-ray diffraction (XRD) results show no evidence of structural phase transitions up to 26.3 GPa. Moreover, the ratio of band diffusivity shows a sudden increase at around 7 GPa, suggesting possible pressure-induced changes in the electronic structure that are closely linked to the evolution of superconductivity.
@article{arxiv.2412.10818,
title = {Pressure induced superconducting dome in LaNiGa2},
author = {Yanan Zhang and Dajun Su and Zhaoyang Shan and Yunshu Shi and Rui Li and Jinyu Wu and Zihan Yang and Kaixin Ye and Fei Zhang and Yanchun Li and Xiaodong Li and Chao Cao and Valentin Taufour and Lin Jiao and Michael Smidman and Huiqiu Yuan},
journal= {arXiv preprint arXiv:2412.10818},
year = {2024}
}