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

Published inPhysical review. B, vol. 96, no. 22, 224513
Publication date2017-12-27
First online date2017-12-27
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.

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Keywords
  • Superconductivity
Affiliation Not a UNIGE publication
Research group
Citation (ISO format)
GUO, Jing et al. Electron-hole balance and the anomalous pressure-dependent superconductivity in black phosphorus. In: Physical review. B, 2017, vol. 96, n° 22, p. 224513. doi: 10.1103/PhysRevB.96.224513
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ISSN of the journal2469-9950
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