By codoping sulfur and copper into lead apatite, the crystal grains are directionally stacked and the room-temperature resistivity is reduced from insulating to 2×10⁻⁵~Ω·m. The resistance-temperature curve exhibits a nearly linear relationship suggesting the presence of strange-metal phase. A possible Meissner effect is observed in dc magnetic measurements. An even-in-field transverse voltage is found indicating the possible contribution of individual vortex dynamics. A clear pathway towards superconductivity in this material is subsequently benchmarked.
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Wang et al. (2024) studied this question.
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