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arXiv · 1808.09914

Resistivity of high pressure phosphorus phases

Xinyu Li·Philip B. Allen
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Abstract

Simple cubic (sc) black phosphorus (denoted BP), stable at P>10GPa, seems an ordinary metal. It has electron-phonon-driven superconductivity with Tc 5-10 K. The A17 phase, stable at atmospheric pressure, has a narrow gap, becomes semimetallic at P=1 GPa, and has a smooth transition to topological metal behavior at P ~ 5 GPa. The A7 phase, stable for 5<P<10 GPa, is metallic, superconducting, and less conventional than the sc phase. Some insights are extracted from analysis of resistivity versus temperature at various pressures. A surprising order-of-magnitude disagreement between theory and experiment is discussed.

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Xinyu Li, Philip B. Allen. 2018-08-29. Resistivity of high pressure phosphorus phases. https://arxiv.org/abs/1808.09914

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