Studies on the superconductivity for the “111” type iron arsenide superconductor

Xian-cheng WANG (望贤成); Qing-qing
LIU (刘清青); Liu-xiang
YANG (杨留响); Zheng
DENG (邓正); Yu-xi
LÜ (吕玉玺); Wei-bo
GAO (高伟波); Si-jia
ZHANG (张思佳); Ri-cheng
YU (禹日成); Chang-qing JIN (靳常青)

doi:10.1007/s11467-009-0042-6

Front. Phys. ›› 2009, Vol. 4 ›› Issue (4) :464 -468. DOI: 10.1007/s11467-009-0042-6

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Studies on the superconductivity for the “111” type iron arsenide superconductor

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Abstract

The “111” type LixFeAs (x ranges from 0.8 to 1.2) with Cu₂Sb type tetragonal structure was synthesized with T_c 18K. The isostructure NaFeAs was further studied, which shows superconductivity with T_c up to 26K. The effect of pressure on superconductivity was investigated.

Keywords

iron arsenide superconductor / LiFeAs

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Xian-cheng WANG (望贤成), Qing-qing LIU (刘清青), Liu-xiang YANG (杨留响), Zheng DENG (邓正), Yu-xi LÜ (吕玉玺), Wei-bo GAO (高伟波), Si-jia ZHANG (张思佳), Ri-cheng YU (禹日成), Chang-qing JIN (靳常青),. Studies on the superconductivity for the “111” type iron arsenide superconductor. Front. Phys., 2009, 4(4): 464-468 DOI:10.1007/s11467-009-0042-6