Superconducting phase made from C60 doped with La

Misaho Akada; Toshinari Hirai; Junji Takeuchi; Nobuya Hiroshiba; Ryotaro Kumashiro; Takao Yamamoto; Katsumi Tanigaki

doi:10.1103/PhysRevB.72.132505

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Superconducting phase made from C60 doped with La

Misaho Akada, Toshinari Hirai, Junji Takeuchi, Nobuya Hiroshiba, Ryotaro Kumashiro, Takao Yamamoto, Katsumi Tanigaki

DOI 10.1103/PhysRevB.72.132505 · Physical Review B

T1

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Abstract

The appearance of superconductivity with Tc=12K in C60 when it is doped with La has been reconfirmed with a much larger superconducting fraction than that of the previous work. The reactions of C60 with La are shown to produce compounds with two superconducting onset temperatures of 6 and 12K. However, the true superconducting phase is not a C60 fulleride and is unambiguously proven to be a carbide phase.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	12	Pressure not reported	onset
La2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	11	Pressure not reported	unknown
La2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	13.2	Pressure not reported	unknown
LaC2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.6	Pressure not reported	unknown