New Li-Ethylenediamine-Intercalated Superconductor Li$_x$(C$_2$H$_8$N$_2$)$_y$Fe$_{2-z}$Se$_2$ with $T_c$ = 45 K
| Autor: | Hatakeda, Takehiro, Noji, Takashi, Kawamata, Takayuki, Kato, Masatsune, Koike, Yoji |
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| Rok vydání: | 2013 |
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| Zdroj: | Journal of the Physical Society of Japan 82 (2013) 123705 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.7566/JPSJ.82.123705 |
| Popis: | A new iron-based superconductor Li$_x$(C$_2$H$_8$N$_2$)$_y$Fe$_{2-z}$Se$_2$ with $T_c$ = 45 K has successfully been synthesized via intercalation of dissolved lithium metal in ethylenediamine. The distance between neighboring Fe layers is 10.37 {\AA} and much larger than those of FeSe with $T_c$ = 8 K and K$_x$Fe$_2$Se$_2$ with $T_c$ ~ 30 K. It seems that the high-$T_c$ of Li$_x$(C$_2$H$_8$N$_2$)$_y$Fe$_{2-z}$Se$_2$ is caused by the possible two-dimensional electronic structure due to the large $c$-axis length. Comment: 12 pages, 3 figures, 1 table; accepted for publication in J. Phys. Soc. Jpn |
| Databáze: | arXiv |
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