Strain index, lattice softness and superconductivity of organic donor-molecule salts: Crystal and electronic structures of three isostructural salts k-(BEDT-TTF) 2Cu [N …
U Geiser, AJ Schults, HH Wang, DM Watkins… - Physica C …, 1991 - Elsevier
The recently discovered k-phase salts k-(BEDT-TTF) 2] Cu [N (CN) 2] X (X= Cl, Br, I) are
isostructural but differ in their superconducting properties: the Br-salt is an ambient-pressure
superconductor with T c= 11.6 K, the Cl-salt becomes superconducting (T c= 12.8 K) under a
slight applied pressure of 0.3 kbar, and the I-salt does not exhibit superconductivity under an
applied-pressure of up to 5 kbar. We examine the structural and electronic properties of
these three salts on the basis of their crystal structures determined at 127 K by single crystal …
isostructural but differ in their superconducting properties: the Br-salt is an ambient-pressure
superconductor with T c= 11.6 K, the Cl-salt becomes superconducting (T c= 12.8 K) under a
slight applied pressure of 0.3 kbar, and the I-salt does not exhibit superconductivity under an
applied-pressure of up to 5 kbar. We examine the structural and electronic properties of
these three salts on the basis of their crystal structures determined at 127 K by single crystal …
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