Synthesis of New Lithium- and Monoamine-Intercalated Superconductors Li${}_x$(C${}_n$H${}_{2n+3}$N)${}_y$Fe${}_{1-z}$Se ($n$ = 6, 8, 18) with the Dramatically Expanded Interlayer Spacing

Abstract

New superconductors, Li${}_x$(C${}_n$H${}_{2n+3}$N)${}_y$Fe${}_{1-z}$Se ($n$ = 6, 8, 18), have been synthesized via the co-intercalation of linear monoamines together with Li into FeSe. The distance between neighboring Fe layers expands up to 55.7 Å for n = 18, which is much larger than the previous record of 19 Å in the FeSe-based intercalation superconductors. Tc remains saturated at $\sim$42 K.

6 pages, 3 figures, 1 table

References in corpus (4)

• Superconductivity at Tc = 44 K in LixFe2Se2(NH3)y
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• New Alkali-Metal- and 2-Phenethylamine-Intercalated Superconductors $A_x$(C${}_8$H${}_{11}$N)${}_y$Fe${}_{1-z}$Se ($A$ = Li, Na) with the Largest Interlayer Spacings and $T_{\mathrm{c}}$ $\sim$ 40 K

Cited by in corpus (1)

• Superconductivity at 44.4 K achieved by intercalating EMIM+ into FeSe