New Li-Ethylenediamine-Intercalated Superconductor Li$_x$(C$_2$H$_8$N$_2$)$_y$Fe$_{2-z}$Se$_2$ with $T_c$ = 45 K

Takehiro Hatakeda; Takashi Noji; Takayuki Kawamata; Masatsune Kato; Yoji Koike

doi:10.7566/JPSJ.82.123705

paper

New Li-Ethylenediamine-Intercalated Superconductor Li $_{x}$ (C $_{2}$ H $_{8}$ N $_{2}$ ) $_{y}$ Fe $_{2 - z}$ Se $_{2}$ with $T_{c}$ = 45 K

arXiv:1311.0141 · doi:10.7566/JPSJ.82.123705

Abstract

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 Å 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.

12 pages, 3 figures, 1 table; accepted for publication in J. Phys. Soc. Jpn

References in corpus (3)

Enhancement of superconducting transition temperature of FeSe by intercalation of a molecular spacer layer
Observation of superconductivity at 30 K~46 K in AxFe2Se2 (A = Li, Na, Ba, Sr, Ca, Yb, and Eu)
Superconductivity at Tc = 44 K in LixFe2Se2(NH3)y

Cited by in corpus (26)

Coexistence of 3d-ferromagnetism and superconductivity in [(Li(1-x)Fex)OH](Fe(1-y)Liy)Se
Suppression of phase separation and giant enhancement of superconducting transition temperature in FeSe $_{1 - x}$ Te $_{x}$ thin films
The intercalation chemistry of layered iron chalcogenide superconductors
New intercalation superconductor Lix(C6H16N2)yFe2-zSe2 with a very large interlayer-spacing and Tc = 38 K
Spectroscopic Evidence of Superconductivity Pairing at 83 K in Single-Layer FeSe/SrTiO3 Films
New Superconducting Phase of Li $_{x}$ (C $_{6}$ H $_{16}$ N $_{2}$ ) $_{y}$ Fe $_{2 - z}$ Se $_{2}$ with $T_{c}$ = 41 K Obtained through the Post-Annealing
Metamorphoses of electronic structure of FeSe-based superconductors (Review article)
Electronic structure of FeSe monolayer superconductors
Ionic-liquid-gating induced protonation and superconductivity in FeSe, FeSe0.93S0.07, ZrNCl, 1T-TaS2, and Bi2Se3
Understanding doping, vacancy, lattice stability and superconductivity in KxFe2-ySe2
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 $T_{c}$ $\sim$ 40 K
Electronic structure of FeSe monolayer superconductors: shallow bands and correlations
Heavily Hydride-ion-doped 1111-type Iron-based Superconductors: Synthesis, Physical Properties and Electronic Structure
Enhanced superconducting transition temperature in hyper-interlayer-expanded FeSe despite the suppressed electronic nematic order and spin fluctuations
New Lithium- and Diamines-Intercalated Superconductors Li $_{x}$ (C $_{2}$ H $_{8}$ N $_{2}$ ) $_{y}$ TiSe $_{2}$ and Li $_{x}$ (C $_{6}$ H $_{16}$ N $_{2}$ ) $_{y}$ TiSe $_{2}$
Superconducting properties of novel BiSe $_{2}$ -based layered LaO $_{1 - x}$ F $_{x}$ BiSe $_{2}$ single crystals
Resistive superconducting transition and effects of atmospheric exposure in the intercalation superconductor Ax(C2H8N2)yFe2-zSe2 (A = Li, Na)
Superconductivity and Intercalation Statein the Lithium-Hexamethylenediamine-Intercalated Superconductor Li $_{x}$ (C $_{6}$ H $_{16}$ N $_{2}$ ) $_{y}$ Fe $_{2 - z}$ Se $_{2}$ : Dependence on the Intercalation Temperature and Lithium Content
Evidence for an Additional Symmetry Breaking from Direct Observation of Band Splitting in the Nematic State of FeSe Superconductor
Robustness of superconductivity to structural disorder in Sr $_{0.3}$ (NH $_{2}$ ) $_{y}$ (NH $_{3}$ ) $_{1 - y}$ Fe $_{2}$ Se $_{2}$
Insulating Parent Phase and Distinct Doping Evolution to Superconductivity in Single-Layer FeSe/SrTiO3 Films
Synthesis of New Lithium- and Monoamine-Intercalated Superconductors Li $_{x}$ (C $_{n}$ H $_{2 n + 3}$ N) $_{y}$ Fe $_{1 - z}$ Se ( $n$ = 6, 8, 18) with the Dramatically Expanded Interlayer Spacing
Bi Substitution Effects on Superconductivity of Valence-Skip superconductor AgSnSe2
Sulfur-induced magnetism in FeSe $_{1 - x}$ S $_{x}$ thin films on LaAlO $_{3}$ revealed by muon spin rotation/relaxation
New Lithium- and Diamine-Intercalated Superconductors Lix(CnH2n+4N2)yMoSe2 (n = 2, 6)
Enhanced superconductivity and moderate spin fluctuations suppressed at low energies in heavily electron-doped La1111-based superconductor

New Li-Ethylenediamine-Intercalated Superconductor Lix​(C2​H8​N2​)y​Fe2−z​Se2​ with Tc​ = 45 K

Abstract

References in corpus (3)

Cited by in corpus (26)

New Li-Ethylenediamine-Intercalated Superconductor Li $_{x}$ (C $_{2}$ H $_{8}$ N $_{2}$ ) $_{y}$ Fe $_{2 - z}$ Se $_{2}$ with $T_{c}$ = 45 K