title: Ambient-pressure molecular superconductor with a superlattice containing layers of tris(oxalato)rhodate enantiomers and 18-crown-6.
abstract: We report a novel multilayered organic-inorganic hybrid material, β″-(BEDT-TTF)2[(H2O)(NH4)2Rh(C2O4)3]·18-crown-6. This is the first molecular superconductor to have a superlattice with layers of both BEDT-TTF and 18-crown-6 and also the first with the anion tris(oxalato)rhodate. This is the 2D superconductor with the widest gap between conducting layers, where only a single donor packing motif is observed (β″). The strong 2D nature of this system strongly suggests that the superconducting transition is a Kosterlitz-Thouless transition. A superconducting Tcof 2.7 K at ambient pressure was found by transport measurements and 2.5 K by magnetic susceptibility measurements.
authors.affiliation: School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, U.K.
authors.forename: Lee
authors.identifier: http://orcid.org/0000-0002-5330-5700
authors.initials: L
authors.lastname: Martin
authors.affiliation: School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, U.K.
authors.forename: Alexander L
authors.identifier: http://orcid.org/0000-0002-7778-2325
authors.initials: AL
authors.lastname: Morritt
authors.affiliation: School of Science and Technology, Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS, U.K.
authors.forename: Jordan R
authors.initials: JR
authors.lastname: Lopez
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Hiroki
authors.identifier: http://orcid.org/0000-0002-8350-2246
authors.initials: H
authors.lastname: Akutsu
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Nakazawa
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Shusaku
authors.initials: S
authors.lastname: Imajo
authors.affiliation: Department of Quantum and Condensed Matter Physics, School of Science, Hokkaido University , Kita-ku, Sapporo, Hokkaido 060-0810, Japan.
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Ihara