Electron-hole balance and the anomalous pressure-dependent superconductivity in black phosphorus

Jing Guo, Honghong Wang, Fabian Von Rohr, Wei Yi, Yazhou Zhou, Zhe Wang, Shu Cai, Shan Zhang, Xiaodong Li, Yanchun Li, Jing Liu, Ke Yang, Aiguo Li, Sheng Jiang, Qi Wu, Tao Xiang, Robert J. Cava, Liling Sun

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Abstract

Here we report the in situ high-pressure (up to ∼50-GPa) Hall-effect measurements on single-crystal black phosphorus. We find a strong correlation between the sign of the Hall coefficient, an indicator of the dominant carrier type, and the superconducting transition temperature (TC). Importantly, we find a change from electron-dominant to hole-dominant carriers in the simple cubic phase of phosphorus at a pressure of ∼17.2 GPa, providing an explanation for the puzzling valley it displays in its superconducting TC vs pressure phase diagram. Our results reveal that hole carriers play an important role in developing superconductivity in elemental phosphorus and the valley in TC at 18.8 GPa is associated with a Lifshitz transition.

Original languageEnglish (US)
Article number224513
JournalPhysical Review B
Volume96
Issue number22
DOIs
StatePublished - Dec 27 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Guo, J., Wang, H., Von Rohr, F., Yi, W., Zhou, Y., Wang, Z., Cai, S., Zhang, S., Li, X., Li, Y., Liu, J., Yang, K., Li, A., Jiang, S., Wu, Q., Xiang, T., Cava, R. J., & Sun, L. (2017). Electron-hole balance and the anomalous pressure-dependent superconductivity in black phosphorus. Physical Review B, 96(22), [224513]. https://doi.org/10.1103/PhysRevB.96.224513