Superconductivity in the quaternary compounds LNi4B4C with L=Y, Ho, Er, and Tm
Q. W. Yan, B. G. Shen, Y. N. Wei, T. Y. Zhao, Y. S. Yao, B. Yin, C. Dong, F. W. Wang, Z. H. Cheng, P. L. Zhang, H. Y. Gong, Y. F. Li
DOI 10.1103/PhysRevB.51.8395 · Physical Review B
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Abstract
We have discovered a superconducting phase of YNi4B4C with a tetragonal-symmetric structure in arc-melted samples. The superconducting transition temperature (Tc=15.9 K) of the YNi4B4C phase is comparable to that of the YNi2B2C phases reported by Cava et al. Superconductivity is found not only in YNi4B4C, but also in LNi4B4C, containing the magnetic rare-earth elements Ho, Er, and Tm. Their Tc values are 6.3, 10.5, and 9.9 K, respectively.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YNi4B4C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15.9 | Pressure not reported | onset |
| HoNi4B4C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.3 | Pressure not reported | onset |
| ErNi4B4C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.5 | Pressure not reported | onset |
| TmNi4B4C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.9 | Pressure not reported | onset |
| YNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15 | Pressure not reported | onset |
| LuNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16.6 | Pressure not reported | unknown |
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