Enhancement of Superconductivity in WP via Oxide-Assisted Chemical Vapor Transport
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materials-18-04529.pdf
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Author(s)
Campbell, Daniel J.
Lin, Wen-Chen
Collini, John
Eo, Yun Suk
Anand, Yash
Saha, Shanta
Graf, David
Zavalij, Peter Y.
Paglione, Johnpierre
Date Issued
September 28, 2025
Journal
Materials
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Campbell, D.J.; Lin, W.-C.; Collini, J.; Eo, Y.S.; Anand, Y.; Saha, S.; Graf, D.; Zavalij, P.Y.; Paglione, J. Enhancement of Superconductivity in WP via Oxide-Assisted Chemical Vapor Transport. Materials 2025, 18, 4529.
Version
Final published version
Abstract
Tungsten monophosphide (WP) has been reported to superconduct below 0.8 K, and theoretical work has predicted an unconventional Cooper pairing mechanism. Here we present
data for WP single crystals grown by means of chemical vapor transport (CVT) of WO3, P,
and I2. In comparison to synthesis using WP powder as a starting material, this technique
results in samples with substantially decreased low-temperature scattering and favors
a more three-dimensional morphology. We also find that the resistive superconducting
transitions in these samples begin above 1 K. Variation in Tc is often found in strongly
correlated superconductors, and its presence in WP could be the result of influence from a
competing order and/or a non-s-wave gap.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.3390/ma18194529
