Pressure Tuned 2D Superconductivity in Black Phosphorus

Meiling Jin; Qing Wang; Ying Liu; Qunfei Zheng; Chenkai Li; Shaoheng Wang; Shanmin Wang; Ning Hao; Yuki Nakamoto; Katsuya Shimizu; Jinlong Zhu

arXiv · 2307.08385

Pressure Tuned 2D Superconductivity in Black Phosphorus

Meiling Jin·Qing Wang·Ying Liu·Qunfei Zheng·Chenkai Li·Shaoheng Wang·Shanmin Wang·Ning Hao·Yuki Nakamoto·Katsuya Shimizu·Jinlong Zhu

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Abstract

This paper examines the micro-parameters of superconductors. It studies the modulations from weak van der Waals interaction to strong covalence bonding of superconductors. In particular, we studied layered black phosphorus (BP) as a function of pressure. These results reveal a rich scenario of phase transitions and related quantum phenomena, which show that the phases exhibit superconducting states at a pressure higher than 5.0 GPa. In addition, they indicate an angle-dependent upper critical field that demonstrates the dimensional characteristics of superconductivities. This result suggests that the A17 and cubic phases are three-dimensional (3D). The A7 phase shows a two-dimensional (2D) character. The 2D behavior is related to a weakened, distorted, entangled interlayer coupling.

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Meiling Jin, Qing Wang, Ying Liu, Qunfei Zheng, Chenkai Li, Shaoheng Wang, Shanmin Wang, Ning Hao, Yuki Nakamoto, Katsuya Shimizu, Jinlong Zhu. 2023-07-17. Pressure Tuned 2D Superconductivity in Black Phosphorus. https://arxiv.org/abs/2307.08385

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