Type-I superconductivity in Al6Re
Darren C. Peets, Erjian Cheng, Tianping Ying, Markus Kriener, Xiaoping Shen, Shiyan Li, Donglai Feng
DOI 10.1103/PhysRevB.99.144519 · Physical Review B
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Abstract
While the pure elements tend to exhibit type-I rather than type-II superconductivity, nearly all compound superconductors are type-II, with only a few known exceptions. We report single-crystal growth and physical characterization of the rhenium aluminide Al6Re, which we conclude is a type-I superconductor based on magnetization, ac susceptibility, and specific-heat measurements. This detection of superconductivity, despite the strong similarity of Al6Re to a family of W and Mo aluminides that do not superconduct, suggests that these aluminides are an ideal testbed for identifying the relative importance of valence electron count and inversion symmetry in determining whether a material will superconduct.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al6Re Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.74 | Pressure not reported | unknown |
| Al6Re Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.74 | Pressure not reported | unknown |
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